How long will that book take you?
Enter length (pages or total words), words per minute, and how many minutes you read per day. You get total reading hours and an indicative finish date if you keep that habit.

Before joining a club or buying a thick spine it helps to know if the calendar fits. This calculator turns book length, reading speed in words per minute (wpm), and real minutes you can read each day into total reading hours and an indicative finish date. It does not predict enjoyment; only arithmetic to plan without magic extra hours.
How is time-to-finish calculated?
First you get total words: enter them directly (many publisher pages or Wikipedia list them) or multiply pages by an estimated words-per-page. Default is two hundred seventy-five words per page, a middle ground between mass-market paperback and larger trim; raise it for dense academic layouts or lower it for airy narrative.
Pure reading hours are total words divided by wpm. An eighty-eight-thousand-word book at two hundred twenty wpm needs about four hundred minutes of continuous reading, roughly six and a half hours. That is not six hours on the calendar: you spread those minutes across the daily minutes you declare.
Calendar days are total reading minutes divided by minutes per day, rounded up. With thirty minutes daily, six and a half hours (390 minutes) implies thirteen days. The displayed date adds those days to today as a hint; holidays, travel, or dry weeks are for you to adjust by lowering minutes or adding slack days mentally.
Where reading speed comes from
You can type a wpm you already know, use the reference of about two hundred thirty-eight wpm from adult silent-reading studies (Brysbaert, 2019, informational text), or measure with the Librarius speed test and return here with ?wpm= in the URL. Literary fiction, poetry, or reading in a second language often runs slower than informational benchmarks; plan conservatively for a hard novel.
| wpm | Min/day | Total hours | Approx. calendar days |
|---|---|---|---|
| 220 | 30 | 6.7 h | 13 |
| 180 | 45 | 8.1 h | 11 |
| 238 | 20 | 6.2 h | 19 |
Pages vs total words
- Pages: what you see on your copy or catalog record; tune words per page for dense hardcovers or editions with generous whitespace.
- Total words: best when the publisher lists them or you exported an ebook count; skips page-to-word guesswork.
- Minutes per day: eyes-on-book time only, not audiobook or summary scrolling unless you decide to count them.
Related tools:
Mistakes that skew the date
- Applying informational wpm from a lab test to poetry or footnote-heavy nonfiction without lowering pace.
- Counting social scrolling about the book as reading minutes when pages do not move.
- Ignoring that clubs sometimes split by chapter: the global date still helps, but pair it with pages-per-day until the next meetup.
- Expecting day-perfect accuracy a month out; treat the output as a compass and revisit weekly.
If unsure between two wpm values, run the calculator with the lower one for the deadline and the higher one for an optimistic band; a range beats a single date.
For long series multiply by volume count or sum words across books in total-words mode. For clubs with a summer pause, add dead weeks manually to the date or imagine zero daily minutes during that window before trusting the calendar.
After measuring wpm in the speed test, open this page with the link that includes your pace so you compare titles on the same base. Note the indicative date in your personal calendar as a soft reminder, not a rigid contract.
When the finish date falls inside a club schedule, compare it to the meeting calendar tool: global completion may be later than the next discussion if the group stops mid-book. Use both outputs together so you are not surprised at the table when others are still on part one.
Short books under two hundred pages often finish faster than the model suggests because you read them in one or two sittings; long nonfiction with diagrams may run slower than wpm predicts. Re-run the calculator when you switch genres instead of reusing one wpm for the whole shelf you planned this month.
Graphic novels and heavily illustrated books break the words-per-page assumption; prefer publisher word counts or measure a sample spread and scale manually before trusting a novel-only default.
Frequently asked questions
Why 275 words per page?
It is a mid-range estimate across formats. When your edition lists total words, use words mode and skip the guess.
Does the date skip non-reading days?
No. It assumes you hit your daily minutes every calendar day. If you only read on Sundays, divide total minutes by Sunday minutes to get weeks instead.
Can I import wpm from the speed test?
Yes. Open this calculator with ?wpm=yourValue to prefill the speed field after the test.
Audiobooks?
This page does not measure audio hours. You can compare listening duration to daily listening time separately; the formula here targets silent wpm.
How do I track real progress?
In the Librarius app mark the book as reading, update progress, and review when finished. This web page does not sync with your library.
Sources
- Brysbaert M. (2019): How many words do we read per minute? (Journal of Memory and Language, 2019)
- Librarius: Track your reading progress (Librarius)
Save your goal and track progress
Librarius logs your pages and shows how you are doing.
