Reading Time & Speaking Speed Calculator

Two very different time estimates for the same 13 words

'Ship the calculator, then read it aloud once before you publish the changelog.' -- 13 words -- takes about 0.05 minutes (roughly 3.3 seconds) to silently read at 238 WPM, but about 0.09 minutes (roughly 5.2 seconds) to speak aloud at 150 WPM.

That gap (speaking taking nearly 60% longer than silent reading for the same text) reflects a real, consistent difference: silent reading speed and comfortable speaking pace are governed by different physical and cognitive constraints -- speaking requires actual articulation time that silent reading skips entirely, which is why 238 WPM reading and 150 WPM speaking are both realistic, non-contradictory averages for the same person.

This scales linearly with word count -- a script or passage with 10x as many words would take roughly 10x as long by either measure, making word count the dominant lever for estimating either reading or speaking time once the WPM assumptions are set.

Why both numbers matter for different purposes

WPM is yours to set. Images and pauses are not counted. The reading-time figure is useful for estimating how long a written piece (an article, an email, a blog post) takes a reader to consume silently. The speaking-time figure is useful for planning an actual spoken delivery -- a podcast script, a video voiceover, a presentation -- where pacing needs to match a target runtime.

150 WPM is a commonly cited comfortable, clear speaking pace for narration or presentation -- faster speaking (200+ WPM) is achievable but can sound rushed or reduce listener comprehension, while much slower speaking can feel unnaturally deliberate; adjust the speaking WPM to match your actual intended delivery style.

Neither estimate accounts for pauses (for emphasis, breath, or audience reaction in a spoken context) or non-text elements (images, embedded media in a written piece) -- both would extend the real-world time beyond this pure word-count-based calculation.

Related content-timing tools

For a podcast or video script specifically, where hitting a target runtime matters for production planning, the Podcast Ad Script Word Count & Read Time Calculator applies similar logic to that specific format.

For a written newsletter's silent read time specifically, the Email Newsletter Read Time Estimator covers that narrower use case.

Frequently Asked Questions (FAQ)