Reading Time Calculator

How this is calculated

Total words is pages multiplied by words per page. That number is then divided by your reading speed to get minutes, and divided again by the length of one sitting to get the number of sittings. THE DEFAULT SPEED IS 238 WORDS PER MINUTE, from Brysbaert's 2019 meta-analysis of 190 studies covering 18,573 participants - the largest synthesis of silent reading rates available. It found 238 wpm for silent reading of non-fiction, 260 wpm for fiction, and 183 wpm for reading aloud. ⚠️ That is LOWER than the figure most reading calculators use. Numbers between 250 and 300 wpm circulate widely and are often presented as established, but the meta-analysis puts the typical adult below that for non-fiction. If a calculator has ever told you a book would take six hours and it took nine, an inflated speed constant is a likely reason. The same meta-analysis puts the realistic RANGES at 175 to 300 wpm for non-fiction and 200 to 320 for fiction. Those are facts about readers, not outputs of this calculator - the tool takes one speed and does arithmetic with it. That spread is genuinely wide, which is why speed is an input. If you want your own figure rather than the average, time yourself on a few pages of the actual book - it is a two-minute job and it is far more accurate than any default. Words per page varies more than people expect. Around 275 is a common figure for a standard trade paperback, but a dense academic hardback can carry 400 or more and a large-print or heavily illustrated book far fewer. Counting the words on three typical pages and averaging them takes a minute and removes most of the error in the result. SPEED IS NOT CONSTANT ACROSS MATERIAL. The meta-analysis figures are for continuous prose read for comprehension. A textbook you must actually retain, anything technical, or a language you are still learning will all run considerably slower - and the difference is much larger than the difference between two people reading the same novel. The sittings figure assumes every session is the same length and that you never miss one, which nobody manages. Treat it as a pace to compare against rather than a schedule.

Common questions

Where does 238 words per minute come from?

Brysbaert's 2019 meta-analysis, which pooled 190 studies covering 18,573 participants - the largest synthesis of adult reading rates available. It reported 238 words per minute for silent reading of non-fiction, 260 for fiction, and 183 for reading aloud. Those are averages across a very large sample rather than a rule of thumb, which is why they are the defaults here.

Why is that slower than other calculators say?

Because figures between 250 and 300 wpm circulate widely and are often presented as established fact, and the meta-analysis puts the typical adult below that for non-fiction. The practical consequence is that many reading-time estimates are optimistic by a fifth or more. If a tool has ever told you a book was six hours and it took you nine, a speed constant that was too high is a likely explanation.

How much do people actually vary?

A lot - roughly 175 to 300 words per minute for non-fiction and 200 to 320 for fiction. That range is why speed is an input rather than baked in. If you want a figure that is yours rather than the average, time yourself over a few pages of the book you are actually reading; it takes two minutes and beats any default. The pages-per-sitting output is the easy check: compare it against what you really get through.

How many words are on a page?

Around 275 for a standard trade paperback, but the variation is larger than people expect. A dense academic hardback can carry 400 or more; large-print, heavily illustrated and children's books far fewer. Counting the words on three typical pages and averaging them takes a minute and removes most of the error in the estimate - it matters more than getting your reading speed exactly right.

Does this work for a textbook?

Not well, and this is the biggest limitation. The meta-analysis figures are for continuous prose read for comprehension. Material you have to actually retain, anything technical, or a language you are still learning all run considerably slower - and that gap is much larger than the gap between two people reading the same novel. Reading for study also involves re-reading, note-taking and stopping to think, none of which is reading speed at all. Use a much lower figure, or time yourself on a real chapter.

Are the sittings a schedule?

No - treat the figure as a pace to compare against. It assumes every session is exactly the same length and that you never miss one, which nobody manages. Its real use is telling you whether a book is a week or a month at your current habit, which is usually the question people are actually asking before they start.

Take it further with AI

Copy this into ChatGPT or Claude with your own numbers filled in. It hands over the figures this calculator worked out, so the answer is built on real arithmetic instead of a guess.

I used the Reading Time Calculator at https://www.bfcbrilliance.com/tools/reading-time-calculator.

What I entered:
- Pages (pages): ___
- Words per page (words): ___
- Your reading speed (wpm): ___
- Minutes you read per sitting (min): ___

What it calculated:
- Total reading time: ___
- Total words: ___
- In minutes: ___
- Sittings to finish: ___
- Pages per hour: ___

Use those figures as given — they are already worked out, so please don't recalculate or estimate your own. Help me turn them into a plan: what to buy or do, in what order, roughly what it should cost, and the mistakes people most often make with this job.

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