Tool
Reading time calculator
How long a book takes at your reading speed. Enter the page count, set your speed, and pick how dense the pages are.
Your reading time
Reading time by page count
Hours and minutes at four reading speeds: slow (150 words per minute), the non-fiction average (238), the fiction average (260) and fast (400), at 275 words per page.
| Pages | 150 wpm | 238 wpm | 260 wpm | 400 wpm |
|---|---|---|---|---|
| 100 | 3 h 03 min | 1 h 56 min | 1 h 46 min | 1 h 09 min |
| 150 | 4 h 35 min | 2 h 53 min | 2 h 39 min | 1 h 43 min |
| 200 | 6 h 07 min | 3 h 51 min | 3 h 32 min | 2 h 18 min |
| 250 | 7 h 38 min | 4 h 49 min | 4 h 24 min | 2 h 52 min |
| 300 | 9 h 10 min | 5 h 47 min | 5 h 17 min | 3 h 26 min |
| 350 | 10 h 42 min | 6 h 44 min | 6 h 10 min | 4 h 01 min |
| 400 | 12 h 13 min | 7 h 42 min | 7 h 03 min | 4 h 35 min |
| 500 | 15 h 17 min | 9 h 38 min | 8 h 49 min | 5 h 44 min |
| 600 | 18 h 20 min | 11 h 33 min | 10 h 35 min | 6 h 52 min |
| 800 | 24 h 27 min | 15 h 24 min | 14 h 06 min | 9 h 10 min |
| 1,000 | 30 h 33 min | 19 h 15 min | 17 h 38 min | 11 h 28 min |
How the time is worked out
Reading time = pages × words per page ÷ words per minute. We assume 275 words on a typical paperback page; large type and generous margins hold fewer, dense non-fiction more, so the page-density setting changes it. The default speeds are the averages found by a 2019 review of 190 studies of adult silent reading in English: 238 words per minute for non-fiction and 260 for fiction.
To find your own speed, read for exactly five minutes, count the words on one full page, multiply by the pages read, and divide by five.
Data: How many words do we read per minute? A review and meta-analysis of reading rate (Marc Brysbaert, Journal of Memory and Language 109 (2019)); Open Library monthly data dumps (works, editions, authors, reading log, ratings) (Open Library / Internet Archive).