Adult silent reading of English non-fiction runs at about 238 words a minute — the mean from Brysbaert’s 2019 meta-analysis of nearly two hundred studies. A prepared script read aloud runs at roughly 130. That is close to a factor of two, which is why a thousand-word article takes four minutes to read and seven and a half to deliver.
Anyone turning a written piece into a talk without doing that division ends up with twice the material and half the time.
What rate applies to what?
The activity changes the number more than the person does.
| Activity | Words per minute |
|---|---|
| Silent reading, non-fiction | ~238 |
| Silent reading, fiction | ~260 |
| Prepared speech, read aloud | ~130 |
| Conversational speech | ~150 |
| Audiobook narration | 150–160 |
| Fast commentary | 250+ |
The fiction figure being higher is not a quirk. Narrative prose is more predictable word to word, which lets a reader move faster without losing comprehension — the same reason unfamiliar technical material reads slowly regardless of who is reading it.
Why do nerves make people faster?
Because the reliable finding about speaking rates is that anxiety accelerates delivery rather than slowing it. A speaker who rehearsed comfortably at 130 words a minute frequently delivers at 150 or more on the day, finishing early and sounding rushed.
The practical response is to rehearse deliberately slower than feels natural and to build in explicit pauses, because pauses are the first thing to disappear under pressure. A script timed to fill the slot exactly will overrun in rehearsal and underrun on stage.
It is also why timing a talk by reading the script silently is useless. The only figure that means anything is the one from saying it out loud at something close to the intended pace.
How many slides is too many?
Almost everyone plans too many, and the arithmetic explains why: a slide takes far longer to talk through than to read. The rough guide of one to two minutes a slide is an output of the word count rather than a rule.
Slides times words per slide, divided by the speaking rate, plus question time — that is the whole calculation, and it usually produces a smaller deck than the one already built. A twenty-minute slot at 130 words a minute is 2,600 words, which is about ten substantial slides or twenty sparse ones.
Question time is the part most often left out of the plan and never left out of the schedule.
What is a page, in words?
It depends on formatting, and the convention worth memorising is 250 words to a double-spaced 12-point page — so 1,000 words is four pages.
That figure is not arbitrary. It comes from the standard manuscript page: 12-point monospace, double spaced, one-inch margins, producing roughly 25 lines of about 10 words. Publishing has used it as a unit long enough that word counts and page counts are interchangeable in a submission.
Single-spaced, the same page holds around 500 words, and a typeset book page holds 250 to 300 depending on trim size. Any of those is a defensible answer, which is why the question needs the formatting attached.
Reading aloud has a floor that silent reading does not. Articulation takes physical time — the mouth cannot produce syllables faster than a certain rate however well rehearsed — which is why the spoken figures cluster so much more tightly than the silent ones. A fast speaker and a slow one differ by perhaps 30 per cent; a fast reader and a slow one can differ by a factor of two.
Should you trust a reading-time badge?
As an order of magnitude. The single rate hides real variation — Brysbaert found a spread across studies from roughly 175 to 300 words a minute depending on reader and material.
So a five-minute read is somewhere between four and seven minutes for a real person. It is a useful signal about length and a poor promise about time, and treating it as the latter is how a "three-minute read" becomes an argument.
The genuinely useful version is your own rate, measured over a known passage. That number is worth more than any population mean and it takes one timing to get.
The most reliable correction is to time one real rehearsal end to end, out loud, with the slides advancing. Every estimate before that is arithmetic; that one is evidence, and it is usually longer than the arithmetic said.
Questions people ask
Does reading speed vary by language? Substantially, and comparing word counts across languages misleads because word length differs. Characters per minute is the more comparable measure.
Is speed reading real? Comprehension falls as rate rises past a point, and the large claimed gains do not survive testing. What does help is skipping deliberately, which is a different skill.
How do I time a podcast segment? At narration rate if it is scripted. Unscripted conversation runs faster and fills time far less predictably.
Why does my talk always overrun? Usually questions and setup rather than content. Timing the script and adding nothing for either is the most common planning error.
Two rates, roughly a factor of two apart, and the activity picks which. The reading time calculator uses the silent rate, the speech time calculator the spoken one, the words per minute calculator measures your own, the presentation time calculator turns a deck into a duration, and the word count to page count calculator handles the unit publishing asks for.