All Veomark tools

Fees, margins, tax, interest, and payout math.

• PayPal Fee Calculator Exact net, gross, and invoice amount after PayPal fees.
• Stripe Fee Calculator Domestic, international, FX, and ACH fees - net payout and invoice gross-up.
• Etsy Profit Margin Calculator Listing, 6.5% transaction, payments, Offsite Ads, COGS, and postage vs net profit.
• Shopify Profit Margin Calculator Plan-tier gateway fees, COGS, and ads vs profit per item and monthly net.
• Crypto Profit/Loss Calculator Buy vs sell price, fees, and P/L.
• Simple Loan EMI Calculator Monthly EMI, interest, and tenure.
• Discount & Sales Price Calculator Percent off, sale price, and original price.
• VAT / GST Tax Calculator Tax-inclusive and tax-exclusive amounts.
• Compound Interest Calculator Principal, rate, and compounding periods.
• Freelance Rate & Project Scope Calculator Hourly, daily, and project quotes after tax, PTO, overhead, and profit margin.
• SaaS LTV Calculator Churn, LTV, LTV:CAC ratio, CAC payback, and 12-month revenue.
• Amazon FBA Fee Calculator Referral, FBA fulfillment, unit margin, and ROI after COGS and inbound.
• Startup Runway Calculator Month-by-month cash runway from burn, revenue growth, and capex - plus zero-cash date.
• Break-Even Calculator Monthly units and revenue to cover fixed costs after contribution margin.
• ROI Calculator Simple ROI, net profit or loss, and annualized CAGR from initial, final, and years.
• ROAS Calculator Platform ROAS vs true net profit after COGS, payment fees, and shipping.
• Churn Rate Calculator Logo churn, gross and net revenue churn, retention, and implied customer lifespan.
• CAC Payback Calculator Gross-margin-adjusted CAC payback, capital-adjusted months, and LTV:CAC preview.
• Working Capital Calculator Net working capital, current ratio, and quick ratio from cash, AR, inventory, and payables.
• Upwork Fee Calculator Per-contract 0% to 15% freelancer service fee, withdrawals, tax, and inverse invoice gross-up.
• Mortgage Payment & Amortization Calculator Monthly principal and interest, total interest, and payoff from loan amount, APR, and term.
• Debt Payoff Snowball vs Avalanche Calculator Compare snowball and avalanche payoff months and interest on two debts plus extra payment.
• Rental Property Cash Flow & Cap Rate Calculator NOI, cap rate, cash-on-cash, and monthly cash flow from rent, expenses, and financing.
• Car Lease vs Buy Calculator Compare total cash out for a lease versus a loan purchase over the same term.
• Emergency Fund Savings Goal Calculator Months of expenses to a target fund, monthly save amount, and date you hit the goal.
• Auto Loan Payment & Depreciation Calculator Monthly car payment versus estimated residual value so you can see equity at a chosen year.
• Refinance Break-Even & Savings Calculator Months to recoup closing costs and lifetime interest saved versus keeping the current loan.
• Side Hustle Tax Estimator (1099) Self-employment tax and a rough federal income-tax band on 1099 profit after expenses.
• Personal Net Worth Calculator Assets minus liabilities across cash, investments, home equity, and common debts.
• College Savings & 529 Growth Calculator Future value of a 529-style account from seed, monthly contributions, years, and assumed return.
• Roth IRA vs Traditional IRA Growth Calculator After-tax future value of Roth versus traditional at a chosen withdrawal tax rate.
• Dividend Reinvestment (DRIP) Calculator Share count and ending value when dividends are reinvested at a constant yield and price growth.
• Stock Option & RSU Value Estimator Gross and after-tax value of RSUs or options from shares, FMV, strike, and a flat tax rate.
• Inflation Adjusted Purchasing Power Calculator What today's dollars buy after N years at a constant inflation rate, and the real value of a future sum.
• Inflation Impact Savings Calculator Real ending value of a savings balance when the yield is below (or above) inflation.
• Commercial Lease Rate Calculator (per SQFT) Annual and monthly rent from rentable square feet, rate per SF, and extra NNN or CAM load.
• Property Tax Estimator & Comparison Tool Estimated annual and monthly tax from assessed value and millage, plus a second-jurisdiction compare.
• Home Affordability & Max Income Ratio Calculator Max purchase price from income, debts, rate, and a chosen housing-ratio cap (28/36 style).
• Real Estate Agent Commission Split Calculator Listing and buyer-side dollars from sale price, total commission, and office split.
• Hard Money Loan Interest Calculator Prepaid points, monthly interest, and annualized cost on a short-term hard-money loan.
• Invoice Late Fee Penalty Calculator Flat fee plus periodic interest on an unpaid invoice after the grace period.
• Credit Card Minimum Payment vs Payoff Calculator Months and interest if you pay only the minimum versus a fixed extra payment.
• Merchant Processor Interchange-Plus Fee Calculator Processor cost from interchange percent, per-item, and markup on a ticket and monthly volume.
• Subscription Box Profitability Calculator Per-box contribution and monthly net after COGS, pick-pack, shipping, and payment fees.
• Consulting Retainer Pricing Calculator Monthly retainer from hours reserved, billable rate, utilization, and a risk buffer.
• Small Business Loan SBA Payment Estimator Estimated monthly payment and total interest on an SBA-style amortizing term loan.
• Employee Turnover Cost Estimator Replacement cost from salary, vacancy months, recruiting, and ramp productivity loss.
• Employee vs Contractor Cost Comparison Tool Fully loaded W-2 cost versus 1099 bill rate for the same monthly hours.
• Equipment Depreciation Calculator (MACRS / Straight-Line) Year-1 deduction under straight-line or 5-year MACRS half-year for a piece of equipment.
• Inventory Holding Cost Calculator Annual carrying cost from average inventory value, storage, capital, shrink, and service.
• Gross Margin vs Markup Percentage Converter Convert markup on cost to gross margin on price, and the reverse, with dollar examples.
• Inventory Turnover Ratio Calculator Turns and days on hand from COGS and average inventory.
• Accounts Receivable Turnover Calculator AR turns from credit sales and average receivables, with implied collection days.
• Days Sales Outstanding (DSO) Calculator DSO from ending AR and a chosen trailing sales window (30, 60, or 90 days).
• Enterprise Value (EV) to EBITDA Calculator EV and EV/EBITDA from equity value, net debt, and trailing EBITDA.
• Burn Multiple & Capital Efficiency Calculator Burn multiple from net burn over net-new ARR in the same period.
• SaaS Rule of 40 Benchmark Calculator Growth plus profit margin versus the Rule of 40 line, with the gap in points.
• SaaS Magic Number Calculator Sales efficiency from this-quarter net-new ARR versus last-quarter S&M spend.
• Net Revenue Retention (NRR) Calculator NRR from starting ARR, expansion, contraction, and churned ARR.
• Expansion MRR & Contraction Calculator Net MRR movement from new, expansion, reactivation, contraction, and churn.
• Customer Lifetime Value to CAC Ratio Calculator LTV:CAC from ARPU, gross margin, monthly churn, and fully loaded CAC.
• Stock Option Exercise Cost & AMT Tax Estimator Cash to exercise plus a rough AMT on the ISO bargain element at a flat AMT rate.
• Crypto Staking Yield & APY Calculator Projected token and USD value from principal, APY, compound frequency, and lock months.
• Crypto Dollar-Cost Averaging (DCA) Return Estimator Average cost and paper P/L from equal buys over N periods at a start and end price path.
• Crypto Liquidity Pool Impermanent Loss Calculator Impermanent loss versus HODL for a 50/50 pool when one asset moves relative to the other.
• eBay Profit & Final Value Fee Calculator Net after eBay final-value percent, per-order fee, shipping you ate, and COGS.
• Mercari Fee & Net Earnings Calculator Seller net after Mercari selling fee and shipping you cover versus buyer-paid labels.
• Poshmark Sales Profit Calculator Net after Poshmark commission, shipping discount you offer, and item cost.
• Amazon FBA Storage Fee Estimator Monthly and aged storage from cubic feet, rate per cu ft, and long-term surcharge.
• Amazon Merch by Demand Royalty Calculator Royalty per shirt from list price minus Amazon product cost on Merch on Demand.
• Etsy Listing Fee Renewal Estimator Monthly listing cash from active listings, $0.20 auto-renews, and optional auto-renew on sale.
• Walmart Marketplace Fee & Margin Calculator Net after referral percent, per-item fee, fulfillment, COGS, and ads.
• WooCommerce vs Shopify Monthly Fee Comparison Tool Monthly platform plus gateway cost on the same GMV for a Woo stack versus a Shopify plan.
• Product Packaging Box Dimension & Shipping Weight Calculator Dimensional weight versus actual weight so you can see which one a carrier will bill.
• Free Shipping Threshold Profitability Estimator Margin after you gift shipping once the cart crosses a free-shipping threshold.
• Return Rate Cost & Margin Impact Calculator True margin after a return rate, outbound cost you cannot reclaim, and restock fees.
• E-Commerce Cart Abandonment Recovery Loss Estimator Lost GMV and recoverable dollars from sessions, add-to-cart rate, abandon rate, and AOV.
• Venmo Fee Calculator Goods-and-services 1.9% + $0.10 plus optional instant cash-out at 1.75% (min $0.25, max $25).
• Cash App Fee & Instant Transfer Calculator Instant cash-out at a chosen percent (default 1.75%, min $0.25), plus 2.75% business receive and 3% card-send.
• Zelle Transfer Limit Tracker Remaining daily and monthly Zelle capacity after amounts already sent, plus whether a next payment fits.
• Wise International Transfer Fee Calculator Net received from send amount, variable percent, fixed fee, and mid-market rate you paste from a Wise quote.
• Payoneer Withdrawal Fee Calculator Net after Payoneer local-bank, ACH, or SWIFT withdrawal fees on a balance you already received.
• Square Invoice Fee Calculator Net on a Square invoice after Free-plan card 3.3% + $0.30 or ACH 1% ($1 minimum).
• Klarna BNPL Cost Calculator Pay in 4 schedule at 0% APR versus longer Klarna financing with simple interest, plus optional merchant fee.
• Afterpay Installment Cost Calculator Four equal Afterpay payments on the order total, plus optional late fees if you miss a payment.
• Affirm Installment Interest Calculator Monthly Affirm payment, total interest, and total paid from purchase amount, APR, and term months.
• GoFundMe Platform Fee Calculator Organizer net after 2.9% + $0.30 payment processing. US platform fee is $0. Optional donor tip does not reduce the organizer.
• Kickstarter Fee & Payout Estimator Creator payout after 5% Kickstarter fee plus 3% + $0.30 processing per pledge on a successfully funded US campaign.
• Indiegogo Fee & Payout Calculator Creator payout after 5% Indiegogo platform fee plus 3% + $0.20 processing per transaction.
• Fiverr Seller Fee & Net Earnings Calculator Seller net after Fiverr’s 20% commission on the order amount, with optional extra gig extras.
• Toptal Freelancer Rate Calculator Freelancer take-home from a client bill rate, hours, and a keep-percent you enter because Toptal does not publish the split.
• Depop Seller Fee Calculator US Depop processing 3.3% + $0.45 with 0% commission, versus UK 10% commission plus processing you paste.
• Facebook Marketplace Shipping Fee Estimator Seller net from item price, shipping charged, actual label cost, and an optional Marketplace selling percent.
• OfferUp Seller Fee Calculator Local 0% versus shipped OfferUp selling fee (default 12.9%) on item price, plus optional shipping you absorb.
• Instacart Shopper Earnings Estimator Take-home from batch pay, tips, miles, MPG, and hours. Not an Instacart API and not a guaranteed wage.
• DoorDash Dasher Earnings Estimator Dasher take-home from base pay, peak pay, tips, miles, fuel, and hours after gas.
• Uber Eats Delivery Earnings Estimator Courier net from offer pay, tips, miles, fuel, and hours. Uber’s customer service fee is not your offer.
• Grubhub Driver Earnings Estimator Contribution plus tips minus fuel from miles, MPG, and gas price, with hourly after gas.
• Uber Driver Take-Home Pay Estimator Trip fares plus tips minus Uber service fee percent and fuel, with after-gas hourly.
• Lyft Driver Take-Home Pay Estimator Lyft ride earnings plus tips minus commission percent and fuel, separate from Uber fee math.
• Amazon Flex Earnings Estimator Block offer minus fuel from miles, MPG, and gas, with pay per hour and per stop.
• Airbnb Host Payout Calculator Nightly rate times nights minus 3% host-only service fee, cleaning, and occupancy tax you absorb.
• Vrbo Host Fee Calculator Stay subtotal minus Vrbo owner commission percent (default 8%) and optional channel extras.
• Turo Car-Share Host Earnings Calculator Trip price times host keep percent (90 / 75 / 60 plans) minus extras you pay, not Airbnb nightly math.
• Rover Pet-Sitting Earnings Calculator Booking total minus Rover's default 20% service fee, optional supplies, per-night or per-walk net.
• TaskRabbit Tasker Earnings Calculator Tasker hourly times hours minus supplies and optional platform percent. Client Trust and Support is not subtracted.
• Gumroad Seller Fee Calculator Sale price minus Gumroad's 10% platform fee (processing included on the default) and optional VAT you remit.
• Teachable Course Revenue Calculator Course price minus Teachable transaction percent (10% / 5% / 0%) and Stripe 2.9% + $0.30.
• Thinkific Payout Estimator Course price minus card processing only (default 2.9% + $0.30). Thinkific does not take a transaction percent.
• Kajabi Membership Revenue Calculator Monthly members times price minus card processing and Kajabi plan cost allocated to the month.
• Udemy Instructor Revenue Share Calculator Student payment times 37% marketplace or 97% instructor-coupon/organic share, minus optional promo extras.
• Redbubble Royalty Calculator Retail minus Redbubble base, or artist percent of retail. Default uses markup (retail - base) as the artist royalty.
• Society6 Artist Royalty Calculator Retail times artist percent (default 10%) plus optional flat bonus. Not Redbubble markup math.
• Printful Print-on-Demand Margin Calculator Retail minus Printful product cost, shipping, and payment percent. You own the storefront, unlike Redbubble.
• Printify Profit Margin Calculator Retail minus Printify provider cost, shipping, and payments. Routing across providers is why this is not Printful.
• StockX Seller Fee Calculator Ask price minus 9% transaction (level editable) minus 3% payment processing. Not GOAT's 9.5% default.
• GOAT Seller Fee Calculator Sale price minus 9.5% commission (editable) minus 2.9% payment processing. Intentionally not StockX 9% + 3%.
• Grailed Seller Fee Calculator Item price minus 9% Grailed seller fee minus 3% payment processing. Fashion peer-to-peer, no StockX authentication hold.
• Vinted Seller Fee Calculator Default 0% seller fee because Vinted buyer protection is often charged to the buyer. Optional mode subtracts shipping you absorb.
• ThredUp Payout Estimator Listed price times consignment payout percent (default 15%) minus optional kit or cleanout fee. Not a Grailed-style seller marketplace cut.
• 99designs Contest Prize Split Calculator Designer prize times your share percent (default 100%). 99designs takes $0 from the designer prize when the client paid the listing. Optional co-designer split.
• LinkedIn Premium ROI Calculator Value from extra clients or deals attributed to Premium minus subscription cost, then ROI = (value - cost) / cost.
• Indeed Sponsored Job Cost Estimator CPC times clicks for campaign cost, then cost per apply and cost per hire. Not a ZipRecruiter monthly slot.
• ZipRecruiter Cost-Per-Hire Calculator Months times slot price times slot count, divided by hires. Flat membership math, not Indeed CPC.
• 401(k) Employer Match Calculator Salary times a common match: 100% of the first 3% plus 50% of the next 2%. Returns match dollars and employee plus match in-plan.
• Social Security Benefit Estimator VERY ROUGH: monthly AIME times a 40% replacement placeholder to mimic a PIA-like monthly, times 12 for annual. Not SSA.gov bend points.
• HSA Contribution & Tax Savings Calculator HSA contribution times combined federal plus state marginal rates. Also shows after-tax paycheck cost.
• FSA Use-It-or-Lose-It Tracker Annual election minus spent, then daily spend needed over days left. Optional rollover dollars are ignored unless you check the box.
• Term vs Whole Life Insurance Cost Calculator Term annual premium times years versus whole-life annual times years, then the difference minus optional cash value.
• Disability Insurance Needs Calculator Target benefit = salary times replacement percent minus existing disability and optional SS disability. Also shows a spend gap after other income.
• Umbrella Insurance Cost Estimator Coverage divided by $1,000 times an editable planning rate (default $0.15 per $1,000). Not a homeowners premium.
• Renters Insurance Premium Estimator Personal property value divided by $1,000 times an editable rate (default $5 per $1,000 of contents). Deductible is shown, not priced. Not homeowners dwelling.
• Homeowners Insurance Premium Estimator Dwelling replacement divided by $1,000 times an editable rate (default $3.50 per $1,000) plus optional liability add-on. Not renters contents math.
• Extended Warranty Value Calculator Failure probability times repair cost, minus warranty price. Expected value of repair versus cost, with a skip/consider note.
• Credit Utilization Ratio Calculator Sum of card balances divided by sum of limits across three cards. Default $400/$2,000, $900/$5,000, $0/$1,500. Not debt-to-income.
• Debt-to-Income Ratio Calculator Monthly debts divided by gross monthly income. Optional front-end housing payment over the same gross. Not credit utilization.
• FIRE Number Calculator Annual spend divided by safe-withdrawal percent (default 4%) for a FIRE number. Optional 0% runway from current savings.
• Safe Withdrawal Rate 4% Calculator Annual and monthly withdrawal from a nest egg at a chosen safe withdrawal rate. Default 4% of $1,000,000.
• Sequence-of-Returns Risk Simulator One crash year then constant returns, minus a fixed annual withdrawal. Compares ending value to a no-crash path.
• Stock Dollar-Cost Averaging Calculator Monthly stock buys with linear price interpolation from start to end. Shares, average cost, end value, and P/L.
• Dividend Yield Calculator Annual dividend per share divided by price. Yield only, no reinvestment compounding.
• P/E Ratio Calculator Price divided by earnings per share, optional industry P/E gap. Not book value and not P/B.
• Book Value Per Share Calculator Shareholders equity divided by shares. Optional price for P/B. Not a P/E ratio.
• Bond Yield to Maturity Calculator Textbook YTM approximation (C + (F-P)/n) / ((F+P)/2). Flag: not an IRR / Newton solver.
• Bond Duration Calculator Macaulay duration from annual coupon PV cash flows, n capped at 15. Simplified annual, not a full yield-curve model.
• Annuity Payout Calculator Amortizing payout PMT = P x r / (1-(1+r)^-n). Monthly uses r = annual/12. Not an insurance quote.
• Pension Lump Sum vs Annuity Calculator Present value of a monthly pension versus a lump sum at a discount rate. States which PV is higher.
• 529 vs UTMA UGMA Comparison Calculator Same monthly deposits at 7%: 529 future value versus UTMA after 15% tax on gains. Not a 529 growth-only page.
• Income-Driven Student Loan Repayment Calculator Simplified IDR: 10% of (AGI minus poverty) / 12. Rough payoff years = balance / annual payment. Not SAVE/IBR.
• Student Loan Refinance Savings Calculator Same term EMI at an old rate versus a new rate on a student-loan balance. Monthly and total interest delta.
• PSLF Eligibility Tracker Certified years toward 10 and payments toward 120. Remaining counts and a years/10 score. Not a DOE forgiveness dollar amount.
• Scholarship ROI Calculator Net gain = award minus hours times hourly time value. ROI = net / time cost.
• Wedding Budget Calculator Guests times per-guest spend plus venue plus extras. All-in cost per guest.
• Funeral Cost Estimator Service, casket, cemetery, and extras summed. Typical US planning total, not a funeral-home quote.
• Moving Cost Estimator Movers plus truck plus gas plus boxes. Line-item DIY stack, not a $0.80/mile van-line tariff.
• Home Renovation ROI Calculator Value add over cost (recoup percent) and net. Kitchen vs bath is a label only; the formula does not change.
• Solar Panel Payback Period Calculator Years = net system cost / annual bill savings. Incentives already netted in the cost field. Degradation ignored.
• EV vs Gas Total Cost of Ownership Calculator Purchase plus years of energy, maintenance, and insurance for an EV versus a gas car. Not a single charging-session bill.
• Gym Membership Cost Per Workout Calculator Monthly dues plus initiation amortized over months, divided by visits, so a $49 plan has a real per-workout price.
• Subscription Creep Cost Tracker Four monthly subscription slots summed and annualized, plus a count of slots that still have a price.
• 50/30/20 Budget Calculator Income times 50/30/20 targets for needs, wants, and saving, then a gap versus the actual amounts you type.
• Envelope Budgeting Planner Three cash envelopes with a budget and spent amount each, remaining dollars, and an overspent flag.
• Sinking Fund Savings Calculator Goal minus already saved, divided by months, for a known future bill such as insurance or a holiday.
• Layaway Payment Plan Calculator Item price minus down payment plus layaway fee, divided by weeks, for a store hold plan rather than a loan EMI.
• Rent vs Buy Break-Even Calculator Five-year rent cash versus down payment plus buy-side housing minus estimated equity.
• Roommate Rent Split Calculator Rent plus utilities split equally n ways, or by room weights 1 / 1.2 / 0.8 for three rooms.
• Security Deposit Interest Calculator Compound interest on a security deposit at a stated annual rate, with a jurisdiction flag that this is not legal advice.
• HOA Fee Impact Calculator Monthly HOA times years, plus HOA as a share of PITI plus HOA, and annual HOA versus home price.
• Timeshare True Cost Calculator Purchase plus years of maintenance, divided by weeks used, versus a hotel-week at a nightly rate times 7.
• Forex Pip Value Calculator Pip value from contract size and pip size. USD-quote pairs use contract x pip; otherwise divide by the quote rate.
• Covered Call Income Calculator Call premium times shares, yield versus stock value, plus optional assignment gain if shares are called away.
• Index Fund Expense Ratio Impact Calculator Future value of a lump sum at a stated return minus two expense ratios. Compares fund ERs only, not a robo wrap.
• Robo Advisor Fee Comparison Calculator Future value with a robo wrap plus ETF ER versus a self-directed ETF-only ER. This page adds the advisor wrap on purpose.
• Stock Vesting Schedule Calculator Grant shares times months elapsed over the vest term, zero before the cliff. This is a share schedule, not vested-share dollar value.
• SAFE Note Conversion Calculator SAFE principal converted at the cheaper of cap price and discounted priced-round price. Simplified, no interest.
• Convertible Note Conversion Calculator Note principal plus simple interest, then the same cap-versus-discount conversion as a SAFE. Interest is the difference.
• Merchant Cash Advance True Cost Calculator Factor-rate payoff and a comparison APR from fee, advance, and days. Flagged because an MCA is not a TILA loan APR.
• Creator Tax Deduction Checklist Sum equipment, software, and home office times deductible percent. Not legal or tax advice.
• Zelle Payment Limit Calculator Zelle Payment Limit. Browser-side only.
• Cash App Boost Savings Calculator Cash App Boost Savings. Browser-side only.
• Venmo Business Profile Fee Calculator Venmo Business Profile Fee. Browser-side only.
• Wise Multi-Currency Account Fee Calculator Wise Multi-Currency Account Fee. Browser-side only.
• Payoneer Card Load Fee Calculator Payoneer Card Load Fee. Browser-side only.
• Square Online Store Fee Calculator Square Online Store Fee. Browser-side only.
• Afterpay Late Fee Calculator Afterpay Late Fee. Browser-side only.
• Sezzle Installment Cost Calculator Sezzle Installment Cost. Browser-side only.
• Affirm Pre-Qualification Estimator Affirm Pre-Qualification. Browser-side only.
• Klarna Pay-in-4 Schedule Calculator Klarna Pay-in-4 Schedule. Browser-side only.
• GoFundMe Withdrawal Timeline Estimator GoFundMe Withdrawal Timeline. Browser-side only.
• Merch by Amazon Tier Unlock Tracker Merch by Amazon Tier Unlock. Browser-side only.
• Redbubble Base Price Margin Calculator Redbubble Base Price Margin. Browser-side only.
• TeePublic Royalty Calculator TeePublic Royalty. Browser-side only.
• Zazzle Royalty Calculator Zazzle Royalty. Browser-side only.
• Society6 Product Margin Comparator Society6 Product Margin Comparator. Browser-side only.
• Displate Metal Poster Royalty Calculator Displate Metal Poster Royalty. Browser-side only.
• Threadless Artist Royalty Calculator Threadless Artist Royalty. Browser-side only.
• Storenvy Shop Fee Calculator Storenvy Shop Fee. Browser-side only.
• Shopify Payments Fee Calculator Shopify Payments Fee. Browser-side only.
• BigCommerce Transaction Fee Calculator BigCommerce Transaction Fee. Browser-side only.
• WooCommerce Payment Gateway Fee Comparator WooCommerce Payment Gateway Fee Comparator. Browser-side only.
• Squarespace Commerce Fee Calculator Squarespace Commerce Fee. Browser-side only.
• Wix Stores Transaction Fee Calculator Wix Stores Transaction Fee. Browser-side only.
• Ecwid Plan Cost Comparator Ecwid Plan Cost Comparator. Browser-side only.
• Gumroad Membership Tier Calculator Gumroad Membership Tier. Browser-side only.
• ConvertKit Subscriber Tier Cost Calculator ConvertKit Subscriber Tier Cost. Browser-side only.
• Mailchimp Plan Cost Calculator Mailchimp Plan Cost. Browser-side only.
• ActiveCampaign Plan Cost Comparison Compare two user-entered ActiveCampaign quotes: monthly versus annual billing, add-ons, and cost per 1,000 contacts.
• Klaviyo SMS Credit Cost Calculator Klaviyo SMS Credit Cost. Browser-side only.
• HubSpot Contact Tier Cost Estimator HubSpot Contact Tier Cost. Browser-side only.
• Zapier Task Usage Calculator Zapier Task Usage. Browser-side only.
• Make.com Operation Cost Calculator Make.com Operation Cost. Browser-side only.
• Airtable Record Limit Tracker Airtable Record Limit. Browser-side only.
• Notion AI Credit Usage Estimator Notion AI Credit Usage. Browser-side only.
• Calendly Booking Conversion Rate Calculator Calendly Booking Conversion Rate. Browser-side only.
• Acuity Scheduling Fee Calculator Acuity Scheduling Fee. Browser-side only.
• Zoom Webinar Cost Calculator Zoom Webinar Cost. Browser-side only.
• Google Workspace Storage Cost Calculator Google Workspace Storage Cost. Browser-side only.
• Dropbox Storage Plan Comparator Dropbox Storage Plan Comparator. Browser-side only.
• iCloud Storage Plan Comparator iCloud Storage Plan Comparator. Browser-side only.
• AWS S3 Storage Cost Estimator AWS S3 Storage Cost. Browser-side only.
• Cloudflare R2 Storage Cost Estimator Cloudflare R2 Storage Cost. Browser-side only.
• Vercel Bandwidth Usage Estimator Vercel Bandwidth Usage. Browser-side only.
• Netlify Build Minutes Calculator Netlify Build Minutes. Browser-side only.
• Domain Renewal Cost Comparator Domain Renewal Cost Comparator. Browser-side only.
• SSL Certificate Renewal Cost Estimator SSL Certificate Renewal Cost. Browser-side only.
• Web Hosting Overage Fee Calculator Web Hosting Overage Fee. Browser-side only.
• GitHub Actions Minutes Cost Calculator GitHub Actions Minutes Cost. Browser-side only.
• Docker Hub Pull Rate Limit Tracker Docker Hub Pull Rate Limit. Browser-side only.
• NPM Package Bundle Size Estimator NPM Package Bundle Size. Browser-side only.
• CDN Bandwidth Cost Estimator CDN Bandwidth Cost. Browser-side only.
• Customer Lifetime Value (LTV) Calculator Customer Lifetime Value (LTV). Browser-side only.
• Customer Churn Cost Calculator Customer Churn Cost. Browser-side only.
• Subscription MRR Growth Calculator Subscription MRR Growth. Browser-side only.
• Subscription ARR Calculator Subscription ARR. Browser-side only.
• SaaS Net Dollar Retention Calculator SaaS Net Dollar Retention. Browser-side only.
• SaaS Gross Margin Calculator SaaS Gross Margin. Browser-side only.
• Freemium Conversion Rate Calculator Freemium Conversion Rate. Browser-side only.
• Trial-to-Paid Conversion Calculator Trial-to-Paid Conversion. Browser-side only.
• Cohort Retention Curve Calculator Cohort Retention Curve. Browser-side only.
• Product Qualified Lead (PQL) Score Calculator Product Qualified Lead (PQL) Score. Browser-side only.
• Feature Adoption Rate Calculator Feature Adoption Rate. Browser-side only.
• Multi-Level Marketing Payout Calculator Multi-Level Marketing Payout. Browser-side only.
• Dropshipping Profit Margin Calculator Dropshipping Profit Margin. Browser-side only.
• Print-on-Demand Shipping Cost Estimator Print-on-Demand Shipping Cost. Browser-side only.
• Wholesale Pricing Markup Calculator Wholesale Pricing Markup. Browser-side only.
• Bulk Order Discount Calculator Bulk Order Discount. Browser-side only.
• Retail Markup vs Margin Calculator Retail Markup vs Margin. Browser-side only.
• Inventory Reorder Point Calculator Inventory Reorder Point. Browser-side only.
• Economic Order Quantity (EOQ) Calculator Economic Order Quantity (EOQ). Browser-side only.
• Safety Stock Level Calculator Safety Stock Level. Browser-side only.
• Days Sales of Inventory (DSI) Calculator Days Sales of Inventory (DSI). Browser-side only.
• Cash Conversion Cycle Calculator Cash Conversion Cycle. Browser-side only.
• Quick Ratio (Acid Test) Calculator Quick Ratio (Acid Test). Browser-side only.
• Current Ratio Calculator Current Ratio. Browser-side only.
• Debt Service Coverage Ratio Calculator Debt Service Coverage Ratio. Browser-side only.
• Loan-to-Value (LTV) Ratio Calculator Loan-to-Value (LTV) Ratio. Browser-side only.
• Debt-to-Equity Ratio Calculator Debt-to-Equity Ratio. Browser-side only.
• Interest Coverage Ratio Calculator Interest Coverage Ratio. Browser-side only.
• Gross Profit Margin Calculator Gross Profit Margin. Browser-side only.
• Operating Margin Calculator Operating Margin. Browser-side only.
• Net Profit Margin Calculator Net Profit Margin. Browser-side only.
• EBITDA Margin Calculator EBITDA Margin. Browser-side only.
• Contribution Margin Calculator Contribution Margin. Browser-side only.
• Payback Period Calculator Payback Period. Browser-side only.
• Net Present Value (NPV) Calculator Net Present Value (NPV). Browser-side only.
• Internal Rate of Return (IRR) Calculator Internal Rate of Return (IRR). Browser-side only.
• Weighted Average Cost of Capital (WACC) Calculator Weighted Average Cost of Capital (WACC). Browser-side only.
• Terminal Value Calculator Terminal Value. Browser-side only.
• Discounted Cash Flow (DCF) Calculator Discounted Cash Flow (DCF). Browser-side only.
• Bond Coupon Payment Calculator Bond Coupon Payment. Browser-side only.
• Zero-Coupon Bond Price Calculator Zero-Coupon Bond Price. Browser-side only.
• Municipal Bond Tax-Equivalent Yield Calculator Municipal Bond Tax-Equivalent Yield. Browser-side only.
• Treasury Bill Yield Calculator Treasury Bill Yield. Browser-side only.
• CD (Certificate of Deposit) Maturity Calculator CD (Certificate of Deposit) Maturity. Browser-side only.
• Money Market Account Yield Calculator Money Market Account Yield. Browser-side only.
• High-Yield Savings APY Comparator High-Yield Savings APY Comparator. Browser-side only.
• Credit Card Rewards Value Calculator Credit Card Rewards Value. Browser-side only.
• Credit Card Balance Transfer Savings Calculator Credit Card Balance Transfer Savings. Browser-side only.
• Credit Card APR Interest Calculator Credit Card APR Interest. Browser-side only.
• Personal Loan Payoff Calculator Personal Loan Payoff. Browser-side only.
• Motorcycle Loan Payment Calculator Motorcycle Loan Payment. Browser-side only.
• Boat Loan Payment Calculator Boat Loan Payment. Browser-side only.
• HELOC Payment Calculator HELOC Payment. Browser-side only.
• Reverse Mortgage Estimator Reverse Mortgage. Browser-side only.
• Mortgage Points Break-Even Calculator Mortgage Points Break-Even. Browser-side only.
• Mortgage PMI Removal Calculator Mortgage PMI Removal. Browser-side only.
• Property Tax Proration Calculator Property Tax Proration. Browser-side only.
• Closing Cost Estimator Closing Cost. Browser-side only.
• Escrow Account Shortage Calculator Escrow Account Shortage. Browser-side only.
• Home Equity Growth Calculator Home Equity Growth. Browser-side only.
• 1031 Exchange Deadline Calculator Calculate 45-day identification and 180-day exchange dates, with the earlier tax return deadline.
• Real Estate Depreciation Schedule Calculator Real Estate Depreciation Schedule. Browser-side only.
• Airbnb Host Occupancy Rate Calculator Airbnb Host Occupancy Rate. Browser-side only.
• Airbnb Cleaning Fee Split Calculator Airbnb Cleaning Fee Split. Browser-side only.
• Vacation Rental Break-Even Calculator Vacation Rental Break-Even. Browser-side only.
• Co-Working Space Cost-Per-Desk Calculator Co-Working Space Cost-Per-Desk. Browser-side only.
• Office Lease Cost Per Square Foot Calculator Office Lease Cost Per Square Foot. Browser-side only.
• Commercial Real Estate Cap Rate Calculator Commercial Real Estate Cap Rate. Browser-side only.
• Parking Space ROI Calculator Parking Space ROI. Browser-side only.
• Storage Unit Rental Cost Comparator Storage Unit Rental Cost Comparator. Browser-side only.
• Moving Truck Rental Cost Estimator Moving Truck Rental Cost. Browser-side only.
• Long-Distance Moving Cost Estimator Long-Distance Moving Cost. Browser-side only.
• Pet Relocation Cost Estimator Pet Relocation Cost. Browser-side only.
• International Shipping Customs Duty Estimator International Shipping Customs Duty. Browser-side only.
• Freight Shipping Cost Per Pound Calculator Freight Shipping Cost Per Pound. Browser-side only.
• LTL Freight Class Calculator LTL Freight Class. Browser-side only.
• Container Shipping Cost Estimator Container Shipping Cost. Browser-side only.
• Import Tariff Calculator Import Tariff. Browser-side only.
• Export Documentation Fee Estimator Export Documentation Fee. Browser-side only.
• Currency Hedging Cost Estimator Currency Hedging Cost. Browser-side only.
• Cryptocurrency Gas Fee Estimator Cryptocurrency Gas Fee. Browser-side only.
• Bitcoin Transaction Fee Calculator Bitcoin Transaction Fee. Browser-side only.
• Ethereum Gas Price Calculator Ethereum Gas Price. Browser-side only.
• NFT Minting Cost Calculator NFT Minting Cost. Browser-side only.
• Crypto Wallet Transfer Fee Comparator Crypto Wallet Transfer Fee Comparator. Browser-side only.
• Stablecoin Peg Deviation Tracker Stablecoin Peg Deviation. Browser-side only.
• DeFi Yield Farming APY Calculator DeFi Yield Farming APY. Browser-side only.
• Crypto Tax Capital Gains Calculator Crypto Tax Capital Gains. Browser-side only.
• Stock Options Vesting Cliff Calculator Stock Options Vesting Cliff. Browser-side only.
• Restricted Stock Unit (RSU) Tax Calculator Restricted Stock Unit (RSU) Tax. Browser-side only.
• Employee Stock Purchase Plan (ESPP) Calculator Employee Stock Purchase Plan (ESPP). Browser-side only.
• 401k Early Withdrawal Penalty Calculator 401k Early Withdrawal Penalty. Browser-side only.
• IRA Required Minimum Distribution Calculator IRA Required Minimum Distribution. Browser-side only.
• Pension Survivor Benefit Calculator Pension Survivor Benefit. Browser-side only.
• Disability Insurance Elimination Period Calculator Disability Insurance Elimination Period. Browser-side only.
• Long-Term Care Insurance Cost Estimator Long-Term Care Insurance Cost. Browser-side only.
• Pet Insurance Premium Comparator Pet Insurance Premium Comparator. Browser-side only.
• Salary Negotiation Range Calculator Salary Negotiation Range. Browser-side only.
• S-Corp Tax Savings Calculator S-Corp Tax Savings. Browser-side only.

Engagement, earnings estimates, bios, and formats.

• TikTok Engagement Rate Calculator Follower or view ER, 5-video average, tier badge, and brand-deal range.
• Instagram Engagement Rate Calculator Follower ER from likes, comments, and saves, with grade and like-to-comment ratio.
• YouTube Channel Money Estimator Views times niche CPM ranges.
• TikTok Money Calculator Views, gifts, and creator-fund estimates.
• YouTube Shorts RPM / Earnings Estimator Shorts views times RPM.
• Social Media Bio Font Generator Unicode bold, italic, and fancy text.
• Hashtag Clean & Format Tool Dedupe, spacing, and hash prefixes.
• Tweet / X Character Counter Character count with line-break formatting.
• Instagram Grid Preview Splitter Split an image into grid dimensions.
• YouTube RPM Calculator AdSense RPM/CPM by niche and geo, Shorts vs long-form, extra streams.
• UTM Builder & Campaign Link Generator Campaign URLs with source, medium, lowercase, space rules, copy, and QR.
• Influencer Sponsored Post Rate Estimator A planning rate from followers, engagement, niche CPM, and usage-rights multiplier.
• Creator Brand Deal Rate & Usage Rights Calculator Deal total from a base fee, paid usage months, exclusivity, and whitelisting seats.
• Substack / Beehiiv Newsletter Revenue Calculator Paid-sub and sponsor revenue after platform take-rate on a newsletter list.
• Patreon / Memberful Subscription Income Estimator Net membership income after platform fees across up to three tiers.
• Twitch Streamer Sub & Ad Earnings Estimator Monthly estimate from subs, bits, and ad minutes using planning RPMs.
• Podcast Sponsor CPM & Earnings Estimator Host-read estimate from downloads, CPM, and reads per episode across a month.
• Audio / Video File Transcription Cost Estimator Transcript cost from duration, per-minute rate, speaker count, and rush multiplier.
• Video Production Budget & Hourly Estimator Shoot budget from crew hours, day rate, gear, and edit hours.
• YouTube Video Title Length & Character Counter Title length versus the 100-character limit and a 70-character search-trim warning.
• YouTube Thumbnail Aspect Ratio & Safe-Zone Previewer Pixel size and safe-zone box for a 16:9 YouTube thumbnail at 1280x720.
• TikTok Video Length & Character Counter Caption characters versus a 2,200 limit and a duration check against a max seconds field.
• Pinterest Pin Image Dimension Splitter & Scaler Target pin pixels from a source width and a 2:3 or custom ratio.
• LinkedIn Post Character & Line Break Cleaner Count toward 3,000 characters and collapse extra blank lines for a LinkedIn post.
• Social Media Image Size & Safe Zone Cheatsheet Tool Preset pixel sizes and a 5% safe inset for common social placements.
• UTM Link Batch Generator & CSV Exporter Build one campaign URL per source line with shared medium, campaign, and lowercase rules.
• Short Link Click-Through Rate (CTR) Impact Estimator Clicks and extra clicks from impressions times a current CTR versus a lifted CTR.
• Social Media Caption Emoji Cleaner & Extractor Strip emoji from a caption or list the emoji it contains, keeping the text either way.
• Email Subject Line Spam Score Checker A simple spam-phrase and punctuation score for a subject line, not a mailbox-provider verdict.
• Email Newsletter Read Time & Word Count Estimator Word count and read minutes at a chosen words-per-minute for a newsletter body.
• Ad CPM / CPC / CTR Interconvertible Calculator Convert among CPM, CPC, and CTR when any two of the three (or spend and outcomes) are known.
• Cost Per Lead (CPL) & Conversion Rate Calculator CPL, conversion rate, and cost per purchase from spend, leads, and sales.
• Ad Copy Character Limits Counter (Google, Meta, TikTok) Live counts against headline and primary-text limits for a chosen ad network.
• App Store Screenshot Resizer & Device Frame Builder Target screenshot pixels for a chosen store device frame from a source aspect.
• Amazon Listing Title & Bullet Point Character Counter Title and bullet lengths versus common Amazon catalog caps.
• Amazon Product Keyword Density Analyzer Word frequency in a listing block so you can see which tokens dominate.
• Affiliate Marketing Earnings Projection Tool Projected commission from clicks, conversion rate, AOV, and commission percent.
• Social Media Handle Availability Format Checker Check whether a handle matches length and character rules for a chosen network. It does not query live availability.
• Online Course Pricing & Revenue Estimator Monthly course revenue from price, enrollments, refund rate, and platform take-rate.
• Facebook Engagement Rate Calculator Facebook ER as (reactions + comments + shares) / followers x 100. Not Instagram likes-saves or TikTok view ER.
• LinkedIn Engagement Rate Calculator LinkedIn ER as (reactions + comments + reposts) / impressions or followers. Default uses impressions.
• Threads Character Counter Paste a Threads draft, count characters, show remaining to 500, and warn when the draft is over.
• Snapchat Creator Earnings Estimator Spotlight-style estimate: views x user-entered RPM / 1000. Not TikTok gifts and not a Snap API.
• Twitch Clip Length Checker Clip length from start and end seconds. Twitch clips typically allow 5-60 seconds. Text OK or fail.
• Reddit Post Karma Ratio Calculator Upvote ratio = up / (up + down) and score = up - down from entered votes. Not a subreddit ranker.
• Pinterest Engagement Rate Calculator Pinterest ER as (saves + clicks + comments) / impressions x 100. Not Instagram follower ER.
• YouTube AdSense Payout Threshold Tracker Track AdSense balance toward the $100 YouTube payout threshold. Remaining and percent. Not RPM.
• TikTok Creator Fund vs Creativity Program Comparison Same views, two RPMs: classic Creator Fund vs Creativity Program. Not gifts. Eligibility is not checked.
• TikTok Shop Commission Calculator Seller net = GMV x (1 - seller commission - optional affiliate %). Default 6% seller and 8% affiliate.
• Instagram Reels Bonus Estimator Plays x user-entered bonus RPM / 1000. Bonuses are invitational, not a public Instagram rate.
• Instagram Hashtag Limit Checker Paste tags, count #hashtags, and check the Instagram 30-hashtag cap. Over or under.
• TikTok Hashtag Limit Checker Count hashtags and caption characters. No 30 cap like Instagram. Warn if over 100 tags or 2,200 chars.
• YouTube Tag Character Limit Checker Comma-separated YouTube tags: tag count and total characters versus the ~500-character tags field.
• YouTube Video Description Link Checker Paste a description: count http(s) links, characters, whether the first 150 chars contain a link, and if the first line is a URL.
• Podcast Ad Script Word Count Read Time Calculator Ad-script words / 150 WPM default. Compare to a 30s or 60s midroll and show remaining seconds.
• Podcast Episode Length Optimizer Episode minutes minus ad seconds. Check a 30-45 minute target and net content minutes.
• Livestream Donation Goal Tracker Goal vs current donations: remaining dollars, percent, optional gifts count. Not Twitch sub RPM.
• Media Kit Rate Card Generator Explicit postRate = (followers/1000) x baseCPM (default $12). Story is 50% of post. Text rate card.
• Brand Ambassador Commission Calculator Sales x commission percent plus a flat bonus when sales clear a threshold. Default 10% and $200 over $5,000.
• Referral Program Commission Calculator Referred leads x conversion x AOV for revenue; referrer earns a percent of AOV. Cost and revenue.
• Discount Code Generator Tracker Generate prefix + random codes (Math.random) and track pool remaining vs used. Default SALE, 5 codes, length 6.
• Content Calendar Day Planner Generator Parse YYYY-MM-DD, emit a text list of post dates every n days. Default 2026-10-16, 7 posts, every 1 day.
• Best Time to Post Calculator Canned local windows by platform (IG / TikTok / LinkedIn) plus a timezone offset label. Not an API.
• Email List Growth Rate Calculator Growth = (end - start) / start over N days, plus new subscribers per day. Not open rate.
• Email Open Rate CTR Benchmark Calculator Open%, CTR, and click-to-open from sent, opens, clicks. Compare open% to a user benchmark (default 20%).
• Email Unsubscribe Rate Calculator Unsub% = unsubs / sent. Flag typical 0.2-0.5% chatter. Not open rate and not list growth.
• SMS Marketing Character Segment Counter GSM 160 vs unicode 70. Count characters and segments = ceil(len / 160) or 70. Paste the text.
• Push Notification Character Counter Title remaining vs 50 and body remaining vs 150 (editable). Apple/Android note. Not SMS 160/70.
• Net Promoter Score NPS Calculator NPS = %promoters - %detractors from promoter, passive, and detractor counts. Not CSAT.
• Customer Satisfaction CSAT Score Calculator CSAT = satisfied / responses x 100. Default 80 / 100 = 80%. Not Net Promoter Score.
• Social Media Marketing ROI Calculator ROI = (revenue - spend) / spend. Default $2,000 spend and $6,500 revenue. Optional hours. No creator fee.
• Influencer Marketing ROI Calculator ROI vs a creator fee plus code sales (optional view CPM). Unlike social ROI, spend starts with the fee.
• Instagram Follower Growth Rate Calculator Follower % growth and per-day net from start, end, and days. Default 12,000 to 12,600 in 30 days. Not ER.
• TikTok Follower Growth Rate Calculator TikTok follower % and per-day net. Default 40,000 to 48,000 in 14 days. Different defaults from Instagram.
• YouTube Subscriber Growth Rate Calculator Subscriber % and per-day net. Default 8,000 to 8,300 in 28 days. Not RPM and not AdSense threshold.
• Instagram Story Safe Zone Previewer 1080x1920 story with 14% side and 11% top insets. Safe W/H plus CSS overlay. Not a YouTube thumbnail inset.
• TikTok Safe Zone Previewer 1080x1920 with lower-third 20% and right-button 12% insets. Safe W/H plus CSS. Not IG story top chrome.
• YouTube End Screen Safe Zone Previewer 1280x720 end screen: right 20% (~300x250 elements), safe left 1024, avoid bottom 60px.
• Podcast Cover Art Size Checker Required 1400-3000 px square. User width/height. OK if square and in range. 3000 max.
• YouTube Channel Art Size Checker Check width and height against 2560x1440 channel art and the 1546x423 center safe zone.
• X Twitter Header Image Size Checker Check a header against X / Twitter 1500x500 (3:1) so profile crops do not clip the mark.
• LinkedIn Banner Size Checker Check a personal or company banner against LinkedIn 1584x396 (4:1).
• Facebook Cover Photo Size Checker Check a Page cover against 820x312 (default) or 820x360, from user width and height.
• App Icon Size Generator iOS Android Scale a 1024 master into iOS 180/120/87 and Android 512/192/48 pixel sizes.
• Meta Ads Daily Budget Pacing Calculator Compare spend so far to expected spend from daily budget times hours elapsed over 24.
• Google Ads CPC Bid Calculator Max CPC = target CPA times conversion rate. Optional actual CPC compared to that ceiling.
• TikTok Ads Minimum Budget Calculator Compare your daily budget to TikTok traffic ($20) or conversions ($50) minimums, both editable.
• Snapchat Ads Cost Estimator Snapchat ad cost = impressions / 1000 x CPM. Impression-priced, not a Pinterest CPC sheet.
• Pinterest Ads Cost Estimator Pinterest ad cost = clicks x CPC. Click-priced, not Snapchat impression CPM.
• LinkedIn Ads Cost Per Lead Estimator LinkedIn CPL = spend / leads. Built to show expensive B2B CPL next to Meta pacing, not Meta CPL.
• Backlink Anchor Text Diversity Checker Paste one anchor per line. Unique share, top-anchor percent, warn if any anchor is over 50%.
• Guest Post Outreach Email Scorer Score a pasted pitch: subject-like first line, 80-180 words, URL, and a named greeting. 0-100.
• Blog Post Headline Analyzer Score a blog headline on length, digits, and power words you / how / new.
• Content Repurposing Format Planner From video minutes, plan a YouTube long cut, ~45s shorts, ~150 wpm blog, and an X thread.
• Influencer Contract Deliverables Checklist Generator Turn posts, stories, and usage months into a paste-ready deliverables checklist for the IO.
• Sponsored Content Disclosure Checker FTC Scan a caption for #ad, #sponsored, or paid partnership. Pass/fail text, not legal advice.
• UGC Rights License Generator Draft a short UGC license summary from brand, creator, months, and platforms. Not a law-firm contract.
• Livestream Shopping Commission Calculator Split livestream GMV into host share, platform share, and seller remainder from two percents.
• Newsletter Sponsorship Rate Calculator Flat sponsor rate = opens / 1000 x CPM. Issue sponsorship, not Substack 10% paid-sub take-rate.
• Podcast Guest Booking Email Template Generator Build a booking email from show name, episode topic, and host, as paste-ready text.
• Video Script Word to Minute Calculator Minutes = words / WPM. Flags whether the runtime sits in an 8-10 minute YouTube band.
• YouTube Chapters Timestamp Generator Paste chapter lines like 0:00 Intro. Validates increasing times, first 0:00, and chapter count.
• Instagram Carousel Slide Planner Outline up to 10 carousel slides at 1080x1350 from a slide count and topic.
• TikTok Trend Hashtag Tracker Template Print a 5-row hashtag tracker table for a niche.
• Creator Merch Profit Margin Calculator Merch margin = price - COGS - ship - platform percent. Creator store math in the social cluster.
• Fan Subscription Tier Pricing Calculator MRR from three prices and three member counts. Pricing worksheet, not a Patreon/Memberful fee stack.
• Discord Server Boost Level Calculator Map boost count to Level 1/2/3 (2 / 7 / 14 boosts) and remaining boosts to the next level.
• Community Membership Churn Calculator Community logo churn = members lost / starting members. Discord/Patreon heads, not SaaS MRR churn.
• Webinar Registration to Attendance Rate Calculator Attendance rate = attended / registered. Default 140 of 320 is 43.75%.
• Landing Page Conversion Rate Calculator Conversion rate = conversions / visitors. A percent, not cost per lead in dollars.
• AB Test Statistical Significance Calculator Two-proportion z on A/B conversions. Significant if |z| > 1.96 at 95%.
• Email Deliverability Score Estimator Checklist score from SPF, DKIM, DMARC, unsubscribe, and bounce percent. Not a mailbox placement test.
• DKIM SPF DMARC Setup Checklist Generator Print SPF, DKIM, and DMARC record checklist lines for a domain. Does not propagate DNS.
• Cold Email Outreach Response Rate Calculator Reply rate = replies / sent. Optional meetings for a meeting rate on the same send count.
• LinkedIn InMail Response Rate Calculator InMail reply rate = replies / sent. Optional credits remaining. Not SMTP cold email.
• Sales Funnel Drop Off Rate Calculator Visit to lead to opportunity to close. Stage conversion and drop-off percents between four counts.
• Customer Acquisition Channel Comparison Calculator CPA and CAC for two channels from spend, leads, and customers, plus a winner line.
• Brand Voice Tone Consistency Checklist Score a sample on average sentence length, banned words, and second-person you count.
• Press Release Word Count Format Checker Count words, look for a dateline month, and require ### or END. Flag the 400-600 word band.
• Media Pitch Email Length Checker Count words in a pasted pitch. Ideal band is 80-150 words for a reporter email.
• Podcast Transcript SEO Keyword Density Checker Density = keyword count / words x 100. Flag the 0.5-1.5% SEO band on a transcript.
• YouTube Video SEO Title Optimizer Score a title for keyword-at-front and 70-char trim vs 100 limit. Not a count-only character counter.
• Blog Meta Description Length Checker Count characters in your blog meta description vs 140-160. Remaining to 160. Not Veomark catalog SEO.
• Multi Platform Post Character Limit Comparator One paste vs X 280, IG 2200, LinkedIn 3000, TikTok 2200, YouTube title 100. Not paid ad RSA limits.
• Social Proof Testimonial Formatter Format quote, name, and role into a proof block, with an optional 800-character trim.
• Case Study Template Generator Fill customer, metric, before, and after into a markdown-ish case-study outline.
• Giveaway Contest Rules Generator Prize, duration, and region into a contest-rules outline. Not legal advice.
• Influencer Whitelisting Contract Checklist Days and ads-usage notes into a Spark / whitelisting contract checklist. Not a law-firm IO.
• Ambassador Program Tier Calculator Bronze under $5k at 5%, silver under $15k at 8%, gold 12%. Rate and pay from sales.
• Loyalty Points Redemption Value Calculator Point value = points / (points per $1). Compare to a cart and leftover due.
• Referral Link Reward Calculator Cost = referred x (your reward + friend reward). Compare to AOV x referred x purchase conversion.
• Community Engagement Score Calculator DAU% = daily actives / members. Messages per DAU = messages / DAU. Community, not ad CTR.
• Content Repost Frequency Planner From posts per week and repost-after days, estimate annual slots, unique library, and repost slots.
• Cross Posting Schedule Generator Stagger a comma-separated platform list by hours. Default IG, TikTok, YouTube every 2 hours.
• Sponsorship Deal Negotiation Worksheet Generator Compare their offer to your rate on a deliverable count, then draft a counter paragraph.
• Patreon Tier Payout Calculator Patreon Tier Payout. Browser-side only.
• Substack Paid Subscriber Revenue Calculator Substack Paid Subscriber Revenue. Browser-side only.
• Ko-fi Tip Fee Calculator Ko-fi Tip Fee. Browser-side only.
• Buy Me a Coffee Fee Calculator Buy Me a Coffee Fee. Browser-side only.
• Fiverr Level Requirements Tracker Fiverr Level Requirements. Browser-side only.
• Upwork Connects Cost Calculator Upwork Connects Cost. Browser-side only.
• Freelancer.com Bid Cost Calculator Freelancer.com Bid Cost. Browser-side only.
• 99designs Package Price Comparator 99designs Package Price Comparator. Browser-side only.
• DesignCrowd Contest Fee Calculator DesignCrowd Contest Fee. Browser-side only.
• Skillshare Instructor Royalty Estimator Skillshare Instructor Royalty. Browser-side only.
• LinkedIn Learning Royalty Estimator LinkedIn Learning Royalty. Browser-side only.
• Podia Course Platform Fee Calculator Podia Course Platform Fee. Browser-side only.
• Uscreen Video Membership Fee Calculator Uscreen Video Membership Fee. Browser-side only.
• Vimeo OTT Subscription Revenue Calculator Vimeo OTT Subscription Revenue. Browser-side only.
• Whop Digital Product Fee Calculator Whop Digital Product Fee. Browser-side only.
• Payhip Digital Sales Fee Calculator Payhip Digital Sales Fee. Browser-side only.
• Sellfy Store Fee Calculator Sellfy Store Fee. Browser-side only.
• Big Cartel Shop Fee Calculator Big Cartel Shop Fee. Browser-side only.
• Depop Boost Cost Calculator Depop Boost Cost. Browser-side only.
• Poshmark Closet Offer Calculator Poshmark Closet Offer. Browser-side only.
• Mercari Seller Payout Calculator Mercari Seller Payout. Browser-side only.
• OfferUp Promote Listing Cost Calculator OfferUp Promote Listing Cost. Browser-side only.
• Facebook Shop Fee Calculator Facebook Shop Fee. Browser-side only.
• Instagram Shopping Checkout Fee Calculator Instagram Shopping Checkout Fee. Browser-side only.
• Snapchat Creator Marketplace Rate Calculator Snapchat Creator Marketplace Rate. Browser-side only.
• YouTube Shorts Fund Payout Estimator YouTube Shorts Fund Payout. Browser-side only.
• TikTok Creativity Program Payout Estimator TikTok Creativity Program Payout. Browser-side only.
• Twitch Subscription Revenue Split Calculator Twitch Subscription Revenue Split. Browser-side only.
• Kick Streamer Payout Calculator Kick Streamer Payout. Browser-side only.
• DLive Streamer Earnings Estimator DLive Streamer Earnings. Browser-side only.
• Roblox Developer Exchange (DevEx) Calculator Roblox Developer Exchange (DevEx). Browser-side only.
• Steam Workshop Revenue Share Calculator Steam Workshop Revenue Share. Browser-side only.
• Itch.io Sales Fee Calculator Itch.io Sales Fee. Browser-side only.
• Epic Games Store Revenue Share Calculator Epic Games Store Revenue Share. Browser-side only.
• Google Play Developer Fee Calculator Google Play Developer Fee. Browser-side only.
• Apple App Store Commission Calculator Apple App Store Commission. Browser-side only.
• Android App Ad Revenue Estimator Android App Ad Revenue. Browser-side only.
• AdMob eCPM Estimator AdMob eCPM. Browser-side only.
• Unity Ads Revenue Calculator Unity Ads Revenue. Browser-side only.
• Podcast Dynamic Ad Insertion Revenue Estimator Podcast Dynamic Ad Insertion Revenue. Browser-side only.
• Spotify Ad Studio Cost Estimator Spotify Ad Studio Cost. Browser-side only.
• SoundCloud Repost Cost Calculator SoundCloud Repost Cost. Browser-side only.
• Bandcamp Fan Funding Fee Calculator Bandcamp Fan Funding Fee. Browser-side only.
• DistroKid Royalty Split Calculator DistroKid Royalty Split. Browser-side only.
• CD Baby Distribution Fee Calculator CD Baby Distribution Fee. Browser-side only.
• TuneCore Royalty Calculator TuneCore Royalty. Browser-side only.
• Streaming Royalty Per-Stream Estimator Streaming Royalty Per-Stream. Browser-side only.
• SMS Marketing Cost Per Message Calculator SMS Marketing Cost Per Message. Browser-side only.
• Push Notification Delivery Rate Calculator Push Notification Delivery Rate. Browser-side only.
• Live Chat Response Time Calculator Live Chat Response Time. Browser-side only.
• Help Desk Ticket Resolution Time Calculator Help Desk Ticket Resolution Time. Browser-side only.
• NPS Survey Sample Size Calculator NPS Survey Sample Size. Browser-side only.
• CSAT Benchmark Comparator CSAT Benchmark Comparator. Browser-side only.
• App Store Rating Impact Estimator App Store Rating Impact. Browser-side only.
• App Uninstall Rate Calculator App Uninstall Rate. Browser-side only.
• Mobile App Session Length Calculator Mobile App Session Length. Browser-side only.
• Daily Active User (DAU) to MAU Ratio Calculator Daily Active User (DAU) to MAU Ratio. Browser-side only.
• Viral Coefficient (K-Factor) Calculator Viral Coefficient (K-Factor). Browser-side only.
• Referral Program ROI Calculator Referral Program ROI. Browser-side only.
• Affiliate Commission Tier Calculator Affiliate Commission Tier. Browser-side only.

Formatters, generators, and encoding utilities.

• JSON Formatter & Validator Pretty-print JSON and surface syntax errors.
• SKILL.md / AGENTS.md Structure Checker Check a SKILL.md or AGENTS.md file against published frontmatter, length, and path rules.
• Base64 Encoder / Decoder UTF-8 and emoji-safe encode/decode, Standard or URL-safe, with byte telemetry.
• HTML to Markdown Converter Convert HTML tags to Markdown.
• CSS Box-Shadow Generator Live preview and copy-ready CSS.
• CSS Gradient Generator Linear and radial gradients.
• UUID / GUID Generator Generate version-4 identifiers.
• URL Encoder / Decoder Percent-encode and decode URLs.
• Color Code Converter HEX, RGB, and HSL conversion.
• Meta Tags Generator Open Graph and Twitter Card tags.
• Robots.txt Generator Allow, disallow, and sitemap URL.
• JSON to YAML Converter Validate JSON in the browser and dump YAML with 2 or 4 space indent.
• CSS Minifier & Optimizer Strip comments, shorten hex, and see original vs minified bytes saved.
• Cron Expression Generator 5-field crontab builder, English explanation, and next 5 local run times.
• JWT Decoder Inspect header, payload, exp/nbf status, and alg none without uploading the token.
• JSON Formatter and Minifier 2-space, 4-space, tab, or compact JSON with auto-fix and line/column errors.
• Regex Tester JavaScript regex flags, match table with groups, presets, and a 20k ReDoS cap.
• JWT Token Generator & Signer Mock Tool Build a header.payload token and optionally HMAC-SHA256 sign it in the browser.
• Hash Generator (MD5, SHA-1, SHA-256, SHA-512) Hash text to hex with SHA-1 / SHA-256 / SHA-512 via SubtleCrypto, plus a compact MD5.
• HMAC Signature Generator & Validator HMAC-SHA256 hex of a message plus an optional expected-hex match check. Generic HMAC, not webhook-specific.
• SSL / TLS Certificate Expiry Calculator Days remaining from notBefore and notAfter dates. Does not decode a certificate file.
• DNS Record Parser (Raw Zone Line) Split a pasted zone line into name, TTL, type, and rdata. Does not query live DNS.
• IP Subnet & CIDR Calculator (IPv4 / IPv6) IPv4 network, broadcast, host count, and mask from an address and prefix length.
• IP Address to Hex / Binary / Integer Converter Convert a dotted IPv4 address to hex, 32-bit binary, and unsigned integer.
• Port Number Lookup & Common Services Guide Tool Map a TCP/UDP port to a common service name and IANA range class.
• HTTP Header Parser & Format Validator Parse Name: value lines, count fields, and flag lines that lack a colon.
• HTTP Status Code Lookup & Response Explainer Reason phrase and class for common HTTP status codes.
• User-Agent String Parser & Device Inspector Heuristic browser, OS, and device class from a User-Agent string.
• String Escape / Unescape Tool (JS, Python, SQL, HTML) Escape or unescape a string as a JS string literal or HTML entities.
• SQL Query Formatter & Indenter Uppercase common SQL keywords and put each on its own line.
• Basic SQL INSERT to JSON Converter Turn a simple INSERT or col=val lines into a JSON object. Not a full SQL parser.
• JSON to CSV / Excel Converter Flatten a JSON array of objects into a CSV table with a header row.
• CSV to JSON Array Converter Parse a header row plus data rows into a JSON array of objects.
• XML to JSON Converter Walk XML tags with DOMParser and emit a nested JSON object.
• Flat YAML to JSON Converter Convert flat key: value YAML lines into a JSON object. Nested YAML is out of scope.
• Basic Markdown to HTML Converter Tiny Markdown subset: headings, bold, emphasis, inline code, and line breaks.
• HTACCESS Rewrite Rule Generator Emit a RewriteRule from a from-path, to-path, and optional 301 flag.
• Nginx Server Block Configuration Builder Build a listen-80 server block with root, try_files, and optional PHP-FPM.
• CSP (Content Security Policy) Header Builder Assemble a Content-Security-Policy header from default-src, script-src, and style-src.
• CORS Header Generator Emit Access-Control-Allow-* response headers from origin, methods, and credentials. No network test.
• Webhook Payload Signer & HMAC Inspector Sign a webhook-style payload with HMAC for provider examples. Not a generic HMAC playground.
• Basic Curl to Fetch Converter Turn a simple curl -X -H -d command into a fetch() call. Not a full curl parser.
• Line Set Comparison Inspector Count added and removed lines and list lines that appear in only one side. Not an ordered diff.
• Regex Match Highlighter Run a RegExp against a haystack and list match count plus the first 10 hits. No pattern AST diagram.
• Keycode / Keyboard Event Code Inspector Show charCode, hex, and a Key* guess from a typed character.
• Unix File Permission (Chmod) Octal Calculator Build a chmod octal and rwxr-xr-x symbolic string from owner, group, and other bits.
• Git Command Cheat Sheet Builder Common git commands for commit, branch, rebase, stash, or undo tasks.
• SemVer (Semantic Versioning) Range Matcher Test whether 1.2.3 satisfies ^, ~, >=, or an exact version range.
• Package.json Version Range Cleaner List dependency names and emit JSON with ^ and ~ stripped from versions. Not a dependency tree.
• CSS Grid Layout Code Builder Generate grid-template-columns, rows, and gap CSS from column and row counts.
• CSS Flexbox Layout Code Generator Build flex-direction, justify-content, align-items, and gap CSS.
• CSS Clamp() Responsive Font Calculator Preferred vw slope between two viewports, then a clamp(min, preferred, max) string.
• CSS Triangle Code Generator Border-trick triangle CSS from direction, size, and fill color.
• CSS Filter Generator (Blur, Sepia, Grayscale) Compose a CSS filter from blur, sepia, and grayscale sliders.
• CSS Keyframe Animation Generator Emit @keyframes plus an animation rule that rotates from one angle to another.
• SVG Path Visualizer & Optimizer Count path commands, measure string length, and strip extra spaces from a d attribute.
• SVG Icon Code Sanitizer & Inline Converter Strip script tags and on* attributes from SVG markup for safer inline use.
• HTML Table Code Generator from Text/CSV Turn CSV rows into a <table> with a header row of th cells.
• This-Origin Web Storage Inspector List keys from window.localStorage or sessionStorage for this site origin only.
• Cookie String Parser & Attribute Visualizer Split a cookie header into names and values, treating flags without = as attributes.
• String Byte Length Calculator (ASCII vs UTF-8 vs UTF-16) Count Unicode characters, UTF-8 bytes via TextEncoder, and UTF-16 code units times two.
• Random API Key & Secret Token Generator Generate a hex or base64url token from crypto.getRandomValues.
• Binary / Decimal / Hexadecimal Interconvertible Calculator Convert a non-negative integer among binary, decimal, and hexadecimal in the browser.
• Data Transfer Speed & Download Time Calculator Time to move a file from size and a link speed in Mbps, with overhead you can set.
• Bandwidth / Bitrate to File Size Estimator File size from video or audio bitrate and duration, in MB and GiB.
• GraphQL Schema Formatter Pretty-print a pasted GraphQL schema with brace indent and count type/interface/enum/input units.
• OpenAPI Swagger YAML Validator JSON.parse OpenAPI if possible; else scan text for openapi:/swagger: and paths:. Issue list, not a YAML parser.
• Postman Collection to Curl Converter Parse Postman Collection v2 JSON and emit curl for up to 10 requests. try/catch JSON.parse.
• .env File Parser & Validator Parse KEY=VALUE lines, count keys, flag duplicates, empty values, and lines that are not valid env assignments.
• Dockerfile Linter & Formatter Trim Dockerfile lines, require FROM, flag latest tags, missing USER, and ADD when COPY would do.
• docker-compose YAML Validator Text scan for services: plus image: or build:. Not a YAML parser and not the OpenAPI scanner.
• Kubernetes Resource Request/Limit Calculator CPU millicores and memory Mi requests vs limits, times replica count, with a limit-below-request flag.
• .gitignore Generator Concatenate Node, Python, macOS, and Windows ignore templates from checkboxes. Not a git command cheatsheet.
• EditorConfig Generator Emit a root EditorConfig from indent style, size, charset, and newline. Not ESLint and not Prettier.
• ESLint Config Generator JSON snippet with env, eslint:recommended, and optional no-console. Not Prettier and not a full flat config runner.
• Prettier Config Generator Prettier.prettierrc JSON from printWidth, tabWidth, singleQuote, semi, and trailingComma.
• Tailwind Color Palette Config Generator Mix a hex toward white and black into a 50-950 Tailwind color object for theme.extend.colors.
• Webpack Config Snippet Generator CommonJS webpack.config.js snippet from entry, output filename, and mode. Not a Vite config.
• Vite Config Snippet Generator ESM vite.config.js with defineConfig and optional React or Vue plugin import. Not Webpack.
• npm Scripts Cheat Sheet Builder package.json scripts block for dev, build, test, and lint from a bundler pick. Not a full package.json.
• Node.js Engines Field Compatibility Checker Compare a current Node major to engines.node like >=18 <23. Not a full SemVer range matcher.
• Python requirements.txt Formatter Sort requirement lines, drop blanks and comments, flag packages without == pins.
• pip Freeze Diff Tool Diff two pip freeze dumps: added, removed, and version changes. Not a requirements sorter.
• Composer (PHP) Command Cheat Sheet Print Composer commands for require, update, dump-autoload, or create-project. Not npm scripts.
• Cargo (Rust) Command Cheat Sheet Print cargo new, build, test, or clippy commands. Not Composer and not npm.
• Go Module Version Parser Parse module path, go version, and require lines from a pasted go.mod. Not cargo or npm.
• Regex-to-English Explainer Walk a regex and emit English for tokens, classes, and quantifiers. Does not run matches like the Regex Tester.
• Cron Expression to Plain-English Explainer Explain a pasted 5 or 6 field cron (lists, ranges, steps). Does not build cron or list next run times.
• API Rate Limit Calculator (RPS to Daily Cap) Convert requests per second into hourly and daily caps, with an optional burst that is not added to the day total.
• Pagination Offset/Limit Calculator Turn page number, page size, and total items into SQL offset, limit, item range, and last page.
• Base32 Encoder/Decoder Encode UTF-8 to RFC 4648 Base32 (A-Z2-7) or decode it back. Not Base64 and not Base58.
• Base58 Encoder/Decoder Encode UTF-8 with the Bitcoin Base58 alphabet (no 0, O, I, l) or decode it back. Not Base32 or Base64.
• URL Shortener Slug Generator Generate random short-link codes of a set length from a URL-safe alphabet. Does not hyphenate a phrase.
• PWA Manifest.json Generator Build a Web App Manifest with name, short_name, start_url, display, theme, and 192/512 icons. Not the tiny favicon snippet.
• Service Worker Cache Strategy Snippet Generator Emit a small fetch handler for cache-first, network-first, or stale-while-revalidate. Not a full Workbox build.
• Core Web Vitals Threshold Checker Band LCP, INP, and CLS against Google good / needs-improvement / poor thresholds. Does not measure a URL.
• XML Sitemap Validator Structural scan for urlset or sitemapindex, xmlns, loc, and lastmod. Not a 50k URL counter (sibling page).
• Sitemap URL Count & Size Checker Count loc tags and UTF-8 bytes of a pasted sitemap against Google 50,000 URL and 50 MB uncompressed caps.
• Canonical Tag Generator Emit a single rel=canonical link tag from an absolute http(s) URL, with optional trailing-slash strip.
• Hreflang Tag Generator Build rel=alternate hreflang tags from language-region codes and URLs, plus optional x-default.
• JSON-LD Article Schema Generator Build schema.org Article JSON-LD from headline, author, datePublished, and URL. Not Product or FAQPage.
• JSON-LD Product Schema Generator Build schema.org Product JSON-LD with Offer price, currency, and availability. Not Article or FAQPage.
• FAQ Schema Markup Generator Turn question|answer rows into schema.org FAQPage JSON-LD. Not Article or Product schema.
• Twitter Card Markup Validator Scan pasted HTML for twitter:card, title, description, and image. Does).
• SERP Title & Meta Description Length Checker Score a Google-style title (50-60) and meta (150-160) together.
• 301 Redirect Map Generator (CSV to Rules) Turn from,to CSV rows into Apache RewriteRule and nginx return 301 blocks.
• .htaccess to Nginx Config Converter Turn RewriteRule lines into nginx rewrite or return. Ignores RewriteCond.
• Nginx to Apache Config Converter Turn nginx rewrite and return 301/302 lines into RewriteRule.
• SSL Certificate Chain Order Checker Split PEM CERTIFICATE blocks, read CN OIDs, and check leaf-then-issuer order. Does not score expiry dates.
• CSR (Certificate Signing Request) Decoder Read a BEGIN CERTIFICATE REQUEST PEM, show subject CN from OID 2.5.4.3, and byte size. Does not sign or verify.
• GPG Key Fingerprint Formatter Normalize a GPG fingerprint to grouped hex (40 or 64 digits). Does not fetch keys or hash a file.
• Data URI Size Calculator Parse a data: URI, report header, decoded bytes, and encoded length. Not a generic UTF-8 string counter.
• CSS Specificity Calculator Score a selector as (IDs, classes, types) plus the a*100+b*10+c shorthand. Not a full:is()/:where() engine.
• ARIA Role Reference Builder Emit a small HTML example and required notes for a chosen ARIA role. Not a full WCAG audit.
• SVG-to-Base64 Converter Encode SVG markup as a data:image/svg+xml;base64 URI. Does not rasterize PNG and is not a generic Base64 box.
• SVG Sprite Sheet Builder Wrap one or more SVG roots into a hidden <svg> of <symbol> elements. Not PNG and not a Base64 data URI.
• CSS Custom Properties Generator Turn name|value rows into a:root { --token: value } block. Not a minifier and not a specificity score.
• URL Parser (Protocol/Host/Path/Query Breakdown) URL Parser (Protocol/Host/Path/Query Breakdown). Browser-side only.
• Query String to JSON Converter Query String to JSON. Browser-side only.
• Basic JSON Schema Validator Basic JSON Schema Validator. Browser-side only.
• Structured JSON Diff Viewer Structured JSON Diff Viewer. Browser-side only.
• YAML Linter YAML Linter. Browser-side only.
• TOML to JSON Converter TOML to JSON. Browser-side only.
• INI File to JSON Converter INI File to JSON. Browser-side only.
• CSV to SQL INSERT Generator CSV to SQL INSERT. Browser-side only.
• SQL WHERE Clause Builder SQL WHERE Clause Builder. Browser-side only.
• SQL JOIN Visualizer SQL JOIN Visualizer. Browser-side only.
• Database Connection String Builder Database Connection String Builder. Browser-side only.
• API Key Format Validator (Per Provider Pattern) API Key Format Validator (Per Provider Pattern). Browser-side only.
• Webhook URL Format Validator Webhook URL Format Validator. Browser-side only.
• Mermaid Flowchart Code Generator Mermaid Flowchart Code. Browser-side only.
• PlantUML Snippet Generator PlantUML Snippet. Browser-side only.
• ASCII Table Generator from CSV ASCII Table Generator from CSV. Browser-side only.
• Shell Script Shebang & Permission Generator Shell Script Shebang & Permission. Browser-side only.
• Crontab Syntax Validator Crontab Syntax Validator. Browser-side only.
• IPv6 Address Compressor/Expander IPv6 Address Compressor/Expander. Browser-side only.
• MAC Address Format Validator MAC Address Format Validator. Browser-side only.
• VLAN ID Range Calculator VLAN ID Range. Browser-side only.
• DNS TTL Countdown Calculator DNS TTL Countdown. Browser-side only.
• robots.txt Validator robots.txt Validator. Browser-side only.
• HTML/XML Entity Encoder-Decoder HTML/XML Entity Encoder-Decoder. Browser-side only.
• Unicode Code Point Lookup Unicode Code Point. Browser-side only.
• Emoji Shortcode to Unicode Converter Emoji Shortcode to Unicode. Browser-side only.
• Zero-Width Character Detector Zero-Width Character Detector. Browser-side only.
• Homoglyph/Lookalike Character Detector Homoglyph/Lookalike Character Detector. Browser-side only.
• Text Encoding Detector (UTF-8 vs Latin-1) Text Encoding Detector (UTF-8 vs Latin-1). Browser-side only.
• Line Ending (CRLF/LF) Converter Line Ending (CRLF/LF). Browser-side only.
• Tab-to-Space Converter Tab-to-Space. Browser-side only.
• Indentation Width Converter Indentation Width. Browser-side only.
• File Extension to MIME Type Lookup File Extension to MIME Type. Browser-side only.
• MIME Type to File Extension Lookup MIME Type to File Extension. Browser-side only.
• GraphQL Query Cost Estimator GraphQL Query Cost. Browser-side only.

Calories, hydration, text, dates, math, and daily planning.

• Online Word & Character Counter Counts plus estimated reading time.
• Case Converter UPPERCASE, lowercase, and Title Case.
• Duplicate Line Remover Unique lines, original order kept.
• Lorem Ipsum Text Generator Words, sentences, and paragraphs.
• Password Generator Custom length and special symbols.
• QR Code Generator Static QR codes in the browser.
• Age Calculator Exact years, months, days, and hours.
• Date Difference Calculator Days between two dates.
• Percentage Calculator X% of Y, or percent increase/decrease.
• Time Zone Converter Convert times across city offsets.
• BMR and TDEE Calculator Mifflin-St Jeor BMR, TDEE, 20% loss and 15% surplus calorie targets.
• Macro Nutrient Calculator Protein, carb, and fat grams from calories, with a fat-loss protein check.
• Daily Water Intake Calculator Daily water from weight, exercise minutes, and climate, in oz, liters, or cups.
• Reading Time & Speaking Speed Calculator Word count plus read and speak minutes from a passage and two words-per-minute speeds.
• Flesch-Kincaid Readability & Grade Level Analyzer Flesch reading ease and grade level from sentence, word, and vowel-group syllable counts.
• Text Case Inverter & Title Case Converter Invert per-character case, force title case, or alternate letter case on a block of text.
• Slugify / URL String Cleaner Tool Turn a phrase into a lowercase hyphenated URL slug and strip leftover punctuation.
• Alphabetical Text / Line Sorter (Ascending / Descending) Sort non-empty lines A to Z or Z to A with a locale-aware compare.
• Line Break / Newline Remover & Joiner Join wrapped lines into one string with a space or a comma-space separator.
• Whitespace / Extra Space Cleaner Collapse runs of spaces and tabs to one space and trim the edges of the text.
• Word Frequency Counter & Density Inspector Top tokens of three or more letters with counts and percent density in the passage.
• Character Count without Spaces Calculator Count characters with spaces, characters without whitespace, and words in one pass.
• Text Difference / Merge Checker Tool Unique lines in A, unique lines in B, and the common lines shared by both lists.
• Binary to Text & ASCII Converter Convert space-separated 8-bit bytes to text, or text to binary bytes.
• Hex to Text / ASCII Converter Convert a hex string to ASCII text, or text to space-separated hex bytes.
• Morse Code Translator (Text to Morse & Morse to Text) Translate A-Z and 0-9 to ITU Morse, or Morse dots and dashes back to text.
• ROT13 & Cipher Generator Rotate A-Z letters by a chosen shift (13 by default). Digits and punctuation stay put.
• NATO Phonetic Alphabet Translator Spell letters and digits as Alpha, Bravo, Charlie through Zulu and Zero through Nine.
• Random List / Name Picker & Spinner Pick one trimmed line at random using crypto.getRandomValues.
• Random Number Generator with Range & Exclusion Rules Draw unique integers between min and max while skipping a comma-separated exclude list.
• Dice Roller & Probability Distribution Simulator Roll n dice with a chosen face count, show faces and total, plus the theoretical mean.
• Coin Flip Simulator & Head/Tail Frequency Counter Simulate n fair flips and report heads, tails, and each side as a percent.
• Daily Countdown Timer & Event Counter Days and hours from Date.now() until a target calendar date (local midnight).
• Working Days & Business Days Calculator (Excludes Holidays) Count Monday through Friday between two dates, minus optional YYYY-MM-DD holidays.
• Leap Year & Century Calculator Say whether a year is a Gregorian leap year, which century it sits in, and the next leap year.
• Time Duration & Hours Worked Timesheet Calculator Hours worked from start HH:MM, end HH:MM, and unpaid break minutes. Overnight shifts wrap.
• Time Adder / Subtractor (Hours, Minutes, Seconds) Add or subtract two hour-minute-second spans and return the normalized total.
• Military Time (24-Hour) Converter Convert a 12-hour hour and minute plus AM/PM into 24-hour time, or the reverse.
• World Clock & Time Offset Difference Visualizer Show two clocks from Date.now() plus minute offsets from UTC, and the gap between them.
• Pomodoro Timer & Custom Interval Planner Total focus minutes from work, break, and rounds, plus an estimated end clock from now.
• Habit Tracker Streak Calculator Active streak if last done is today or yesterday, plus weekly target pace from Date.now().
• Tip Calculator with Split & Custom Percentage Tip amount, bill plus tip, and per-person share from bill, tip percent, and headcount.
• Gasoline / Fuel Cost & Trip Distance Calculator Gallons and fuel cost from miles, miles per gallon, and price per gallon.
• Electric Vehicle (EV) Charging Time & Cost Estimator Charge hours and wall-energy cost from kWh needed, charger kW, price, and efficiency.
• Electric Bill & Appliance Wattage Cost Calculator kWh and cost from appliance watts, hours per day, days, and the kWh rate.
• Pace Calculator for Running & Cycling (Min/Mile or Min/KM) Pace per unit and speed from distance, elapsed minutes, and mile or kilometer units.
• Target Heart Rate Zone Calculator (Karvonen Method) Karvonen target HR from age, resting heart rate, and intensity percent of heart-rate reserve.
• One Rep Max (1RM) Bench / Squat / Deadlift Calculator Epley one-rep max from the weight you lifted and the reps you completed.
• Body Fat Percentage Estimator (US Navy Method) US Navy tape estimate from sex, height, waist, neck, and hip (women) in inches.
• Ideal Body Weight (IBW) Calculator (Devine / Miller Formulas) Devine and Miller ideal body weight in kilograms and pounds from sex and height in inches.
• Lean Body Mass (LBM) Calculator Lean mass from scale weight and a body-fat percent: weight x (1 - body fat).
• Pregnancy Due Date Calculator (Naegele's Rule) Due date as LMP plus 280 days, plus gestational weeks from Date.now().
• Ovulation & Fertile Window Estimator Ovulation near cycle length minus 14 days from LMP, with a window from 5 days before through the day after.
• Scientific Notation / Exponential Notation Converter Split a number into coefficient and exponent, or rebuild the number from coeff times 10^exp.
• Standard Deviation & Variance Calculator Mean, sample variance, and sample standard deviation from a comma or space list of numbers.
• Z-Score & Normal Distribution Calculator Z-score (x-mean)/sd and an approximate left-tail percentile via an erf expansion.
• Margin of Error & Sample Size Calculator Margin of error from z, p, and n, or the sample size that hits a target margin of error.
• Probability & Combinations / Permutations Calculator nCr or nPr for integer n and r using an iterative product (no full factorial).
• Matrix Addition, Subtraction & Multiplication Calculator Add, subtract, or multiply two 2x2 matrices and print the four result entries.
• Quadratic Equation Solver & Graphing Helper Discriminant and roots for ax^2+bx+c. Complex roots print as text when the discriminant is negative.
• Pythagorean Theorem & Triangle Solver Fill any two of a, b, and hypotenuse c (0 means unknown) and compute the missing side.
• Circle Area, Perimeter, and Arc Length Calculator Area, circumference, and arc length from radius and a central angle in degrees.
• 3D Volume Calculator (Sphere, Cylinder, Cone, Prism) Volume for a sphere, cylinder, cone, or rectangular prism from radius, height, length, and width.
• Speed, Distance & Time Interconvertible Calculator Fill any two of speed, distance, and time (0 means unknown) and solve the third.
• Force, Mass & Acceleration (F=ma) Newton Calculator Fill any two of force, mass, and acceleration (0 means unknown) using F = m a.
• Kinetic & Potential Energy Calculator Kinetic energy 1/2 m v^2 and gravitational potential m g h with g defaulting to 9.81.
• Ohm's Law Calculator (Voltage, Current, Resistance, Power) Fill any two of V, I, and R (0 means unknown), then compute the third plus P = V I.
• Resistor Color Code Band Reader & Calculator Read a 4-band resistor: two digits, multiplier, and tolerance, then ohms and percent tolerance.
• Capacitor Value & Code Converter Decode a 3-digit capacitor code such as 104 into picofarads, nanofarads, and microfarads.
• Sound Decibel & Distance Attenuation Calculator Inverse-square level at a second distance: dB2 = dB1 - 20 log10(d2/d1).
• Torque & Power Conversion Calculator (HP to kW) Shaft power from rpm and newton-meters, or convert horsepower to kilowatts.
• Pressure Unit Converter (PSI, Bar, Pascal, Atm) Convert a pressure value among PSI, bar, pascal, and standard atmospheres.
• Temperature Unit Converter (Celsius, Fahrenheit, Kelvin) Convert a temperature among Celsius, Fahrenheit, and Kelvin.
• Energy Unit Converter (Joules, Calories, kWh, BTU) Convert an energy value among joules, thermochemical calories, kilowatt-hours, and BTU.
• Percentage Increase / Decrease / Difference Calculator Increase percent from A to B, decrease percent from A to B, and symmetric percent difference.
• Ratio & Fraction Simplifier Calculator Greatest-common-divisor simplified A:B ratio plus the decimal value of A/B.
• Greatest Common Divisor (GCD) & Least Common Multiple (LCM) Calculator Euclidean GCD and LCM = |A x B| / GCD for two integers.
• Significant Figures (Sig Figs) Rounding Calculator Round a number to n significant figures and show the matching scientific notation.
• QR Code Error Correction Level Explainer Look up byte capacity for QR versions 1-10 at L, M, Q, or H. Does not draw a QR image.
• BMI (Body Mass Index) Calculator BMI (Body Mass Index). Browser-side only.
• Sleep Cycle Bedtime/Wake Calculator Sleep Cycle Bedtime/Wake. Browser-side only.
• Nap Timer Calculator Nap Timer. Browser-side only.
• Jet Lag Adjustment Calculator Jet Lag Adjustment. Browser-side only.
• Caffeine Half-Life Calculator Caffeine Half-Life. Browser-side only.
• Blood Alcohol Content (BAC) Estimator Blood Alcohol Content (BAC). Browser-side only.
• Standard Drink Calculator Standard Drink. Browser-side only.
• Calories Burned by Activity (MET) Calculator Calories Burned by Activity (MET). Browser-side only.
• Steps-to-Calories/Miles Converter Steps-to-Calories/Miles. Browser-side only.
• Stair Climbing Calorie Calculator Stair Climbing Calorie. Browser-side only.
• Swimming Pace Calculator Swimming Pace. Browser-side only.
• Rowing Split Time Calculator Rowing Split Time. Browser-side only.
• VO2 Max Estimator VO2 Max. Browser-side only.
• Resting Heart Rate Zone Finder Resting Heart Rate Zone Finder. Browser-side only.
• Blood Pressure Category Checker Blood Pressure Category. Browser-side only.
• Waist-to-Hip Ratio Calculator Waist-to-Hip Ratio. Browser-side only.
• Waist-to-Height Ratio Calculator Waist-to-Height Ratio. Browser-side only.
• Dog Age to Human Years Calculator Dog Age to Human Years. Browser-side only.
• Cat Age to Human Years Calculator Cat Age to Human Years. Browser-side only.
• Dog Food Portion Calculator Dog Food Portion. Browser-side only.
• Paint Coverage Calculator (Sqft per Gallon) Paint Coverage Calculator (Sqft per Gallon). Browser-side only.
• Wallpaper Roll Calculator Wallpaper Roll. Browser-side only.
• Flooring Tile Quantity Calculator Flooring Tile Quantity. Browser-side only.
• Carpet Cost Calculator Carpet Cost. Browser-side only.
• Concrete Volume (Cubic Yard) Calculator Concrete Volume (Cubic Yard). Browser-side only.
• Mulch & Soil Volume Calculator Mulch & Soil Volume. Browser-side only.
• Gravel Quantity Calculator Gravel Quantity. Browser-side only.
• Lawn Fertilizer Coverage Calculator Lawn Fertilizer Coverage. Browser-side only.
• Grass Seed Coverage Calculator Grass Seed Coverage. Browser-side only.
• Pool Volume & Chemical Calculator Pool Volume & Chemical. Browser-side only.
• Pool Heating Cost Estimator Pool Heating Cost. Browser-side only.
• HVAC BTU Sizing Calculator HVAC BTU Sizing. Browser-side only.
• Insulation R-Value Calculator Insulation R-Value. Browser-side only.
• Room Square Footage Calculator Room Square Footage. Browser-side only.
• Moving Box Count Estimator Moving Box Count. Browser-side only.
• Recipe Ingredient Scaler Recipe Ingredient Scaler. Browser-side only.
• Baking Pan Size Conversion Calculator Baking Pan Size Conversion. Browser-side only.
• Oven Temperature Converter (F/C/Gas Mark) Oven Temperature Converter (F/C/Gas Mark). Browser-side only.
• Cooking Measurement Converter (Cups/Tbsp/mL) Cooking Measurement Converter (Cups/Tbsp/mL). Browser-side only.
• Ingredient Substitution Ratio Calculator Ingredient Substitution Ratio. Browser-side only.
• Coffee-to-Water Ratio Calculator Coffee-to-Water Ratio. Browser-side only.
• Cocktail Dilution & ABV Calculator Cocktail Dilution & ABV. Browser-side only.
• Multi-City Meeting Time Scheduler Multi-City Meeting Time Scheduler. Browser-side only.
• Flight Duration Calculator Flight Duration. Browser-side only.
• Layover Time Sufficiency Checker Layover Time Sufficiency. Browser-side only.
• Road Trip Fuel Stop Planner Road Trip Fuel Stop Planner. Browser-side only.
• Packing List Generator by Trip Length Packing List Generator by Trip Length. Browser-side only.
• Luggage Weight Limit Checker Luggage Weight Limit. Browser-side only.
• Currency Exchange Margin Calculator Currency Exchange Margin. Browser-side only.
• Passport Photo Size Checker Passport Photo Size. Browser-side only.
• GPA Calculator GPA. Browser-side only.
• Weighted Grade Calculator Weighted Grade. Browser-side only.
• Test Score Curve Calculator Test Score Curve. Browser-side only.
• Letter Grade to Percentage Converter Letter Grade to Percentage. Browser-side only.
• Class Attendance Percentage Calculator Class Attendance Percentage. Browser-side only.
• Spaced Repetition Interval Calculator Spaced Repetition Interval. Browser-side only.
• Typing Speed (WPM) Test Tool Typing Speed (WPM) Test. Browser-side only.
• Roman Numeral Converter Roman Numeral. Browser-side only.
• General Number Base Converter (Base 2-64) General Number Base Converter (Base 2-64). Browser-side only.
• Prime Number Checker Prime Number. Browser-side only.
• Factorial Calculator Factorial. Browser-side only.
• Fibonacci Sequence Generator Fibonacci Sequence. Browser-side only.
• Number to Words Converter Number to Words. Browser-side only.
• Words to Number Converter Words to Number. Browser-side only.
• Ordinal Number Converter Ordinal Number. Browser-side only.
• Time to Decimal Hours Converter Time to Decimal Hours. Browser-side only.
• Angle Unit Converter (Degrees/Radians/Gradians) Angle Unit Converter (Degrees/Radians/Gradians). Browser-side only.
• Slope/Gradient Percentage Calculator Slope/Gradient Percentage. Browser-side only.
• Area Unit Converter (Acres/Hectares/Sqft) Area Unit Converter (Acres/Hectares/Sqft). Browser-side only.
• Volume Unit Converter (Liters/Gallons) Volume Unit Converter (Liters/Gallons). Browser-side only.
• Weight/Mass Unit Converter (kg/lb/oz/stone) Weight/Mass Unit Converter (kg/lb/oz/stone). Browser-side only.
• General Length/Distance Unit Converter General Length/Distance Unit. Browser-side only.
• Speed Unit Converter (mph/kmh/knots/mach) Speed Unit Converter (mph/kmh/knots/mach). Browser-side only.
• Meat Doneness Temperature Guide Meat Doneness Temperature. Browser-side only.
• Shoe Size Converter (US/UK/EU) Shoe Size Converter (US/UK/EU). Browser-side only.
• Clothing Size Converter (US/UK/EU) Clothing Size Converter (US/UK/EU). Browser-side only.
• Ring Size Converter Ring Size. Browser-side only.
• Paper Size Converter (A4/Letter/Legal) Paper Size Converter (A4/Letter/Legal). Browser-side only.
• Diagonal Screen Size Calculator Diagonal Screen Size. Browser-side only.
• TV Size Viewing Distance Calculator TV Size Viewing Distance. Browser-side only.
• WiFi Signal Strength (dBm) to Percentage Converter WiFi Signal Strength (dBm) to Percentage. Browser-side only.
• General Data Storage Unit Converter (Bits/Bytes/GB/TB) General Data Storage Unit Converter (Bits/Bytes/GB/TB). Browser-side only.
• Password Strength Entropy Calculator Password Strength Entropy. Browser-side only.
• Diceware Passphrase Generator Diceware Passphrase. Browser-side only.
• Backup Code Formatter (2FA) Backup Code Formatter (2FA). Browser-side only.
• Fuel Efficiency (MPG to L/100km) Converter Fuel Efficiency (MPG to L/100km). Browser-side only.
• Cooking Yield/Shrinkage Calculator Cooking Yield/Shrinkage. Browser-side only.
• Party/Event Headcount Food Calculator Party/Event Headcount Food. Browser-side only.
• Birthday/Zodiac Sign Calculator Birthday/Zodiac Sign. Browser-side only.
• Chinese Zodiac Year Calculator Chinese Zodiac Year. Browser-side only.
• Retirement Countdown Calculator Retirement Countdown. Browser-side only.
• Life Expectancy Estimator (Actuarial-Style) Life Expectancy Estimator (Actuarial-Style). Browser-side only.
• Screen Time Daily Average Calculator Screen Time Daily Average. Browser-side only.
• Commute Time & Cost Calculator Commute Time & Cost. Browser-side only.
• Carbon Footprint (Travel) Estimator Carbon Footprint (Travel). Browser-side only.
• Water Bottle Refill Savings Calculator Water Bottle Refill Savings. Browser-side only.
• Recycling Symbol Lookup Guide Recycling Symbol Lookup. Browser-side only.
• Waist Circumference Health Risk Calculator Waist Circumference Health Risk. Browser-side only.

Canvas, color, ratio, and compression tools.

• SVG to PNG Converter Convert SVG to PNG in the browser.
• Image Dimension Resizer Resize width and height, then download.
• Aspect Ratio Calculator 4:3, 16:9, and 1:1 crop math.
• Color Picker from Image Sample colors from a canvas image.
• Favicon HTML Tag Builder from Upload Preview a 32x32 canvas draw and copy HTML link tags for common favicon sizes. Does not emit ICO files.
• Image Crop Ratio Calculator Target crop-box dimensions.
• PNG Size Reducer (Canvas Downscale) Redraw a PNG at a smaller pixel scale and re-encode.
• PX to REM / EM Converter Convert pixels using a base font size.
• Pencil / Sketch Canvas Tool Draw in the browser and download.
• Web Safe Fonts Preview Tool Preview stacks on sample text.
• Color Contrast Ratio Checker (WCAG 2.1 AA / AAA Compliance) Relative luminance contrast between two colors with WCAG 2.1 AA and AAA pass or fail for normal and large text.
• Color Palette Generator (Monochromatic, Analogous, Triadic) Build a five-swatch hex palette from a base color by rotating HSL hue or stepping lightness.
• Color Shade & Tint Generator Mix a base hex toward black for five shades and toward white for five tints.
• HEX to RGB / RGBA Code Converter Turn a hex color plus alpha into rgb() and rgba() CSS, focused on copy-ready declarations.
• HSL / HSLA to HEX / RGB Converter Convert HSL channels and alpha into hex and rgb/rgba CSS.
• CMYK to RGB / HEX Print-to-Web Color Converter Convert CMYK percents used in print into sRGB and hex for the web.
• Color Blindness Visual Simulator (Protanopia, Deuteranopia) Apply a simple linear RGB matrix for protanopia or deuteranopia and show the simulated hex.
• Hex Sample Mixer (Not Pixel Clustering) Deduplicate pasted hex samples and average them into a mix hex. Does not cluster image pixels.
• CSS Glassmorphism Code Generator Build backdrop-filter frost glass from blur, fill opacity, and a background color.
• CSS Neumorphism Code Generator Soft UI from two opposing box-shadows, radius, distance, blur, and a surface color.
• CSS Border Radius / Blob Shape Builder Eight percentages (horizontal and vertical per corner) compiled into one border-radius blob.
• CSS Text Shadow Code Generator One text-shadow layer from X, Y, blur, and color.
• CSS Backdrop Filter Builder Combine blur, saturate, and brightness into one backdrop-filter declaration.
• CSS Custom Scrollbar Styling Generator WebKit scrollbar width, thumb, and track colors, with an optional Firefox scrollbar-color pair.
• CSS Loader / Spinner Code Builder A rotating border spinner from size, accent color, and animation seconds.
• Image Aspect Ratio Crop Calculator (16:9, 4:3, 1:1, 9:16) Largest centered crop box of a chosen ratio that still fits inside a source width and height.
• Image DPI / PPI Calculator for Printing Print size in inches and centimeters from pixel width, height, and DPI.
• Image File Size Estimator (JPEG vs PNG vs WebP) Rough byte estimates for raw, JPEG, WebP, and PNG from dimensions, bit depth, and JPEG quality.
• WebP / AVIF Compatibility Cheatsheet & Preview Short Chrome, Firefox, and Safari support notes for WebP or AVIF so you can plan a picture fallback.
• Favicon HTML Tag Builder & Manifest Generator Link tags, theme-color, and a tiny web app manifest snippet from a path and theme hex.
• Typography Scale Calculator (Golden Ratio, Major Third) Six modular type sizes from a base pixel size and a ratio such as 1.25 or 1.618.
• Responsive Font Size rem/px Interconvertible Calculator Convert a pixel size through a root px into rem, em, and a clamp() suggestion for fluid type.
• Line Height / Leading Calculator for Typography Unitless line-height plus the matching px and percent values from font size and a 1.2-1.8 ratio.
• CSS Blur Overlay Generator Emit a CSS filter blur for an overlay box. Optional file is not decoded into a blurred image.
• CSS Watermark Overlay Snippet A CSS overlay snippet for watermark text with opacity and size. Not a logo file compositor.
• Photo File Metadata Inspector Show name, byte size, MIME type, and last-modified from a chosen file. Full EXIF tags are not parsed.
• Text Banner ASCII Art Generator Map A-Z, 0-9, and spaces into a three-row block banner. Does not convert a photo to ASCII.
• GIF Speed & Frame Interval Calculator Duration and a hundredths-friendly delay from frame count plus either FPS or delay milliseconds.
• SVG Path Curve / Cubic Bezier Visualizer Cubic Bezier C command and a compact SVG snippet from two control points and an end point.
• CSS Polygon Clip-Path Generator clip-path: polygon() for triangle, diamond, hexagon, or a custom list of points.
• Multi-Size Favicon ICO Packer Emit PNG filenames, HTML link tags, and an ImageMagick ICO command for 16, 32, 48, 180, 192, and 512. Does not build a binary ICO.
• ICO File Inspector Read file name, size, and MIME from a chosen.ico, plus optional header hex for ICONDIR magic 00 00 01 00.
• CSS Unit Converter (px/pt/vh/vw/rem) Convert among px, pt, rem, vw, and vh using a root font size and viewport. Not the px-to-rem-only page.
• Media Query Breakpoint Generator Emit min-width @media snippets for chosen Tailwind-style breakpoints. Not clamp() and not container queries.
• Container Query Snippet Generator Emit container-type and @container min-width snippets for a named container. Not viewport @media.
• Alt-Text Length Checker Count image alt characters against a 125 (social) and 150 (verbose) band. Not a general word counter.
• Batch Color Contrast Checker Score many fg|bg hex pairs for WCAG 2.1 AA/AAA. The single-pair contrast page is a different tool.
• Google Fonts Link/Import Generator Build css2 <link> and @import URLs from a family name and weights. Not a web-safe stack preview.
• Variable Font Axis Tester Emit font-variation-settings for wght, wdth, and slnt. Does not load a.woff2 and is
• Icon Font Unicode Lookup Look up a small Font Awesome and Material icon name table to code points. Not a.ttf parser.
• Image Grayscale Converter Image Grayscale. Browser-side only.
• Image Sepia Filter Tool Image Sepia Filter. Browser-side only.
• Image Rotate & Flip Tool Image Rotate & Flip. Browser-side only.
• Image Border/Frame Adder Image Border/Frame Adder. Browser-side only.
• Image Collage Grid Maker Image Collage Grid Maker. Browser-side only.
• Image Watermark Compositing Tool (Actual Overlay) Image Watermark Compositing Tool (Actual Overlay). Browser-side only.
• Image-to-Base64 Data URI Converter Image-to-Base64 Data URI. Browser-side only.
• Base64-to-Image Preview & Download Tool Base64-to-Image Preview & Download. Browser-side only.
• Image Megapixel Calculator Image Megapixel. Browser-side only.
• Camera Sensor Crop Factor Calculator Camera Sensor Crop Factor. Browser-side only.
• Print Resolution Recommendation Calculator Print Resolution Recommendation. Browser-side only.
• CSS Gradient Text Generator CSS Gradient Text. Browser-side only.
• CSS 3D Transform Generator (Rotate X/Y/Z) CSS 3D Transform Generator (Rotate X/Y/Z). Browser-side only.
• CSS Perspective Tilt Card Generator CSS Perspective Tilt Card. Browser-side only.
• CSS Parallax Scroll Snippet Generator CSS Parallax Scroll Snippet. Browser-side only.
• CSS Sticky Header Snippet Generator CSS Sticky Header Snippet. Browser-side only.
• CSS Masonry Grid Generator CSS Masonry Grid. Browser-side only.
• CSS Object-Fit Preview Tool CSS Object-Fit Preview. Browser-side only.
• CSS Noise/Grain Texture Generator CSS Noise/Grain Texture. Browser-side only.
• CSS Pattern Background Generator (Stripes/Dots) CSS Pattern Background Generator (Stripes/Dots). Browser-side only.
• CSS 3D Button Press Effect Generator CSS 3D Button Press Effect. Browser-side only.
• CSS Badge/Ribbon Generator CSS Badge/Ribbon. Browser-side only.
• CSS Tooltip Generator CSS Tooltip. Browser-side only.
• CSS Toggle Switch Generator CSS Toggle Switch. Browser-side only.
• CSS Progress Bar Generator CSS Progress Bar. Browser-side only.
• CSS Card Hover Effect Generator CSS Card Hover Effect. Browser-side only.
• CSS Animated Gradient Background Generator CSS Animated Gradient Background. Browser-side only.
• SVG Wave Divider Generator SVG Wave Divider. Browser-side only.
• SVG Pattern Background Generator SVG Pattern Background. Browser-side only.
• SVG Icon Recolor Tool SVG Icon Recolor. Browser-side only.
• SVG-to-JSX Component Converter SVG-to-JSX Component. Browser-side only.
• SVG viewBox Calculator SVG viewBox. Browser-side only.
• SVG Stroke-Dasharray Line-Draw Animation Generator SVG Stroke-Dasharray Line-Draw Animation. Browser-side only.
• Logo Color Palette Extractor Logo Color Palette Extractor. Browser-side only.
• Pantone-to-HEX Approximate Converter Pantone-to-HEX Approximate. Browser-side only.
• RAL Color Code to HEX Converter RAL Color Code to HEX. Browser-side only.
• Web-Safe Color Name Lookup Web-Safe Color Name. Browser-side only.
• Random Palette Generator Random Palette. Browser-side only.
• Mesh Gradient CSS Generator Mesh Gradient CSS. Browser-side only.
• Canvas Duotone Image Effect Tool Canvas Duotone Image Effect. Browser-side only.
• Image Pixelation Effect Tool Image Pixelation Effect. Browser-side only.
• Photo-to-ASCII Art Converter Photo-to-ASCII Art. Browser-side only.
• Halftone Dot Effect Generator Halftone Dot Effect. Browser-side only.
• Unique Color Count Analyzer Unique Color Count Analyzer. Browser-side only.
• Dominant Color Extractor (K-Means) Dominant Color Extractor (K-Means). Browser-side only.
• Thumbnail Sprite Sheet Generator Thumbnail Sprite Sheet. Browser-side only.
• CSS Sprite Position Calculator CSS Sprite Position. Browser-side only.
• Icon Grid Spacing Calculator Icon Grid Spacing. Browser-side only.
• App Icon Safe-Zone Calculator (iOS/Android) App Icon Safe-Zone Calculator (iOS/Android). Browser-side only.
• Screenshot Device Frame Mockup Generator Screenshot Device Frame Mockup. Browser-side only.
• Social Post Mockup Preview Tool Social Post Mockup Preview. Browser-side only.
• Business Card Size & Bleed Calculator Business Card Size & Bleed. Browser-side only.
• General Print Bleed & Margin Calculator General Print Bleed & Margin. Browser-side only.
• Poster Size Calculator Poster Size. Browser-side only.
• Golden Ratio Grid Overlay Generator Golden Ratio Grid Overlay. Browser-side only.
• Rule of Thirds Grid Overlay Generator Rule of Thirds Grid Overlay. Browser-side only.
• Color Temperature (Kelvin) to RGB Converter Color Temperature (Kelvin) to RGB. Browser-side only.
• Monitor PPI Calculator Monitor PPI. Browser-side only.
• Signage Legibility Distance Calculator Signage Legibility Distance. Browser-side only.
• Kerning/Letter-Spacing Calculator Kerning/Letter-Spacing. Browser-side only.
• CSS @font-face Snippet Generator CSS @font-face Snippet. Browser-side only.
• Font Pairing Suggester Font Pairing Suggester. Browser-side only.
• Colorblind-Safe Palette Suggester Colorblind-Safe Palette Suggester. Browser-side only.
• Video Thumbnail Safe-Zone Previewer (Twitch) Video Thumbnail Safe-Zone Previewer (Twitch). Browser-side only.
• Discord Banner/Icon Size Checker Discord Banner/Icon Size. Browser-side only.
• Print CMYK vs RGB Warning Checker Print CMYK vs RGB Warning. Browser-side only.
• Image Rounded Corner Preview Tool Image Rounded Corner Preview. Browser-side only.
• Image Vignette Effect Generator Image Vignette Effect. Browser-side only.
• Image Brightness/Contrast Adjuster Image Brightness/Contrast Adjuster. Browser-side only.
• Image Saturation/Hue Adjuster Image Saturation/Hue Adjuster. Browser-side only.
• Image Threshold (Black & White) Converter Image Threshold (Black & White). Browser-side only.
• Image Sharpen/Blur Filter Tool Image Sharpen/Blur Filter. Browser-side only.
• CSS Isometric Shape Generator CSS Isometric Shape. Browser-side only.
• CSS Origami/Paper-Fold Effect Generator CSS Origami/Paper-Fold Effect. Browser-side only.
• CSS Ripple Click Effect Generator CSS Ripple Click Effect. Browser-side only.
• CSS Skeleton Loading Screen Generator CSS Skeleton Loading Screen. Browser-side only.
• CSS Confetti Animation Generator CSS Confetti Animation. Browser-side only.
• CSS Cursor Trail Effect Generator CSS Cursor Trail Effect. Browser-side only.
• Icon Set Consistency Checker (Stroke Width) Icon Set Consistency Checker (Stroke Width). Browser-side only.
• Design Token Naming Convention Generator Design Token Naming Convention. Browser-side only.
• Spacing Scale Generator (4px/8px Grid) Spacing Scale Generator (4px/8px Grid). Browser-side only.
• Color Ramp Generator (50-900 Shades) Color Ramp Generator (50-900 Shades). Browser-side only.
• Dark Mode Color Inverter Dark Mode Color Inverter. Browser-side only.
• Accessible Focus Ring CSS Generator Accessible Focus Ring CSS. Browser-side only.
• CSS Print Stylesheet Generator CSS Print Stylesheet. Browser-side only.
• Favicon Dark/Light Mode Variant Generator Favicon Dark/Light Mode Variant. Browser-side only.
• Image Comparison Slider Snippet Generator Image Comparison Slider Snippet. Browser-side only.
• Before/After Image Overlay Generator Before/After Image Overlay. Browser-side only.
• Responsive Image srcset Generator Responsive Image srcset. Browser-side only.
• Picture Element Fallback Generator Picture Element Fallback. Browser-side only.
• Lorem Picsum Placeholder URL Builder Lorem Picsum Placeholder URL Builder. Browser-side only.
• Placeholder Image Text/Size Generator Placeholder Image Text/Size. Browser-side only.
• Color Palette Accessibility Score Checker Color Palette Accessibility Score. Browser-side only.
• Icon-to-SVG-Symbol Sprite Converter Icon-to-SVG-Symbol Sprite. Browser-side only.
• Image Metadata Stripper (Privacy Tool) Image Metadata Stripper (Privacy Tool). Browser-side only.
• SVG Optimizer & Minifier Tool SVG Optimizer & Minifier. Browser-side only.
• Meta Robots Tag Generator Meta Robots Tag. Browser-side only.
• Slack Custom Emoji Size Checker Slack Custom Emoji Size. Browser-side only.