How Long Does It Take to Read a 300-Page Book? The Math, With Real Reading Speeds

The two numbers behind the answer

Reading speed. Psychologist Marc Brysbaert's 2019 meta-analysis in the Journal of Memory and Language pooled 190 studies with 18,573 participants. He found:

Reader and text	Average speed	Typical adult range
Silent reading, non-fiction	238 words per minute	175 to 300 wpm
Silent reading, fiction	260 words per minute	200 to 320 wpm
Reading aloud	183 words per minute	not given

The paper says these averages are lower than the figures often quoted, and that rates are lower for children, older adults and people reading in a second language.

Words per page. No standard exists. Trim size, font and margins change it. We use 250, 300 and 350 words per page below, which covers spacious through dense paperbacks. You can count your own book in a minute (see the test at the end).

How long 300 pages takes

Our arithmetic, using Brysbaert's averages:

Page density	Words in 300 pages	Non-fiction (238 wpm)	Fiction (260 wpm)
Spacious, 250 words/page	75,000	5 h 15 min	4 h 48 min
Typical, 300 words/page	90,000	6 h 18 min	5 h 46 min
Dense, 350 words/page	105,000	7 h 21 min	6 h 44 min

And for the same 90,000-word book across the normal range of adult readers:

Reader	Speed	Time for 90,000 words
Slower end, non-fiction	175 wpm	8 h 34 min
Slower end, fiction	200 wpm	7 h 30 min
Faster end, non-fiction	300 wpm	5 h 00 min
Faster end, fiction	320 wpm	4 h 41 min

How many days, at the time you actually have

Most people read in short sessions. For a typical 300-page book (90,000 words):

Daily reading	Fiction at 260 wpm (346 min total)	Non-fiction at 238 wpm (378 min total)
15 minutes	about 23 days	about 25 days
30 minutes	about 12 days	about 13 days
60 minutes	about 6 days	about 6 to 7 days

So a book a month takes about 15 minutes a day, and a book every two weeks takes about 30. Those are reading minutes, not minutes with the book open.

A 5-minute test for your own speed

1. Pick the book you plan to read and open to a full page of text.
2. Count the words in three full lines and divide by 3 to get words per line. Count the lines on the page. Multiply them: that is your words per page.
3. Set a timer for 5 minutes and read normally, not racing.
4. Count the pages you read (use fractions for a partial page), multiply by words per page, and divide by 5. That is your words per minute.
5. Total time in minutes = (pages x words per page) ÷ your words per minute.

Example: 11 words per line x 30 lines = 330 words per page. If you read 4 pages in 5 minutes, that is 1,320 words ÷ 5 = 264 wpm, right around the fiction average. A 300-page book of that density is 99,000 words, or about 375 minutes (6 h 15 min).

Why speed-reading claims don't hold up

Brysbaert's review found that average rates line up with the maximum speed at which people can follow speech, and that there is no evidence for separate "reading gears" beyond the difference between reading and scanning. If a method promises to triple your speed with full understanding, the research does not back it. Reading more often is the reliable way to finish more books.