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Book · by Douglas Adams · first published 1992

How many pages is Mostly Harmless?

Mostly Harmless by Douglas Adams has a median of 235 pages across 8 English-language print editions with a recorded page count; the middle half of editions run 219 to 273 pages.

Median pages
235
8 editions counted
Range
219–288
shortest to longest edition
Reading time
4.1h
at 260 wpm (fiction average)
Words (est.)
65k
at 275 words per page
Book 5 of The Hitchhiker's Guide to the Galaxy
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How long will Mostly Harmless take you?

Starts at the fiction average of 260 words per minute and 275 words per page. Move the slider to your own speed.

Reading time
4 h 09 min
At 30 min a day
9 days
At 1 hour a day
5 days

Page count of every edition, by year

Each dot is one English-language print edition. Shaded: middle half of editions. Line: median.

2252502751995200020051992: 219 pages1992: 277 pages1992: 219 pages1993: 288 pages1993: 219 pages1996: 272 pages2000: 240 pages2009: 230 pagesmedian 235
22525027520001992: 219 pages1992: 277 pages1992: 219 pages1993: 288 pages1993: 219 pages1996: 272 pages2000: 240 pages2009: 230 pagesmedian 235
Open Library edition records (2026-09-30 dump).

Editions counted

The 8 editions behind the figures above, newest first. Open Library lists 53 editions of this work in all languages and formats.

YearPublisherFormatPagesOpen Library
2009Pan BooksPaperback230OL24613527M
2000Ballantine BooksMass Market Paperback240OL9486017M
1996ISIS Large Print BooksLibrary Binding272OL9472904M
1993Ballantine BooksPaperback288OL9476074M
1993Pan Books–219OL22083460M
1992Heinemann–219OL18772737M
1992Harmony Books–277OL1722032M
1992BCA–219OL18626468M

More by Douglas Adams

All 9 books by Douglas Adams with page counts

Questions

How many pages is Mostly Harmless?
About 235 pages: that is the median of 8 English-language print editions on Open Library. Editions range from 219 to 288 pages.
How long does it take to read Mostly Harmless?
About 4 h 09 min at 260 words per minute, assuming 275 words per page. At 30 minutes a day that is 9 days.
How many words is Mostly Harmless?
Roughly 65,000 words, estimated from the median page count at 275 words per page. Open Library does not record word counts, so this is an estimate.

Data: Open Library monthly data dumps (works, editions, authors, reading log, ratings) (Open Library / Internet Archive); 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)); Wikidata: part of the series (P179) and series ordinal (Wikimedia Foundation / Wikidata contributors).