Reading Speed Calculator
Calculate your reading speed in WPM and estimate how long it takes to read any book.
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How to use this calculator
Divide the number of words you read by the number of minutes it took. Then divide the total book word count by your WPM to get reading time in minutes.
- 1
Read a passage for a set time and count the words (or use a known word count), then enter both numbers.
- 2
Enter your book length in pages and the approximate words per page (250 is standard for most novels).
- 3
Read your WPM, how it compares to the average, and how long the book will take you.
Frequently asked questions
How do I measure my own words per minute?
Read a passage at your normal pace for a timed stretch, then count the words you covered. Enter that word count and the minutes. A longer sample (five minutes rather than one) smooths out pauses and a slow start.
Where does the 238 WPM comparison come from?
It is the fixed reference figure built into this tool, and the “faster/slower than average” line is simply your WPM against 238, rounded to a whole percent. The tool does not cite a study for it, so treat it as a yardstick rather than a measured norm for your age, language or subject.
What do the categories mean?
They are labels this tool assigns by WPM: under 150 is Slow, 150 to 249 Average, 250 to 399 Good, 400 to 699 Fast, and 700 or more Speed Reader. They describe speed only, not how well you understood the text.
Does the tool check comprehension?
No. It divides words by minutes and nothing else. Skimming a page quickly produces a high WPM even if you retained little, so only compare readings taken with the same level of attention.
What if I leave the minutes or words per page blank?
A minutes value of 0, which is also what a cleared box becomes, is treated as 1 minute, and a words-per-page value of 0 is treated as 250. If you enter zero words, the speed is 0 WPM and the book time shows as 0m.
How is the time for the book calculated?
Book words are pages multiplied by words per page, divided by your WPM, then rounded to the nearest minute and shown in hours and minutes. It assumes you hold the same pace throughout, with no breaks, rereading or note-taking.
Will the result match the real time for a textbook?
Only if your sample came from similar material. Dense or technical text, small print and heavy diagrams usually change pace and words per page, so time yourself on a page from the actual book and count its words.
Reading speed calculator — WPM and time to finish a book
From a timed sample to words per minute
Words per minute is the word count of what you read divided by the minutes it took. Enter that, plus the book’s page count and words per page, and the calculator multiplies pages by words per page to get a total word count, then divides by your WPM to estimate the finishing time. The result is rounded to the nearest minute and written as hours and minutes, so it never shows a minute value of 60.
Worked examples with different books
Three runs of the tool show how page count and density change the answer. The default sample of 500 words in 2 minutes gives 250 WPM, which this tool labels Good, 5% above its 238 WPM reference. The other rows show how much the book’s density matters: pages hold different numbers of words, so the tool uses whatever words-per-page figure you supply.
| Sample | Book | Speed | Category | Book word count | Time for book |
|---|---|---|---|---|---|
| 500 words in 2 min | 300 pages × 250 words | 250 WPM | Good | 75,000 | 5h 0m |
| 1,200 words in 5 min | 420 pages × 300 words | 240 WPM | Average | 126,000 | 8h 45m |
| 900 words in 3 min | 200 pages × 250 words | 300 WPM | Good | 50,000 | 2h 47m |
The category bands
Categories are assigned from your WPM against five bands. Because the cut-offs sit at 150, 250, 400 and 700, 249 WPM is Average and 250 WPM is Good, even though they differ by one word a minute. Use the band as a rough label and the WPM number as the real measurement.
| Words per minute | Category |
|---|---|
| Under 150 | Slow |
| 150 to 249 | Average |
| 250 to 399 | Good |
| 400 to 699 | Fast |
| 700 and above | Speed Reader |
Getting a trustworthy number
Count the words in a real page of the book you plan to read and use that figure instead of the 250 default; a paragraph-heavy page and a page of dialogue can differ a lot. Take your timed sample from the same kind of text, at the pace you would actually use when studying or relaxing. If the book time looks too short, remember that it covers reading only. Pauses, lookups and notes are not included, so add a margin before scheduling it. A practical habit is to measure twice, on a lighter chapter and on a harder one, and plan with the slower of the two figures; the book-time estimate is only as good as the sample behind it.
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Results are estimates for informational purposes only and do not constitute professional financial, medical, legal, or technical advice. Read full disclaimer →