Project Hail Mary
At your speed≈ 9½ hrs
Pages476
Audiobook≈ 16 hrs
Every reading time on the site updates to your pace. Page counts are an estimate, so treat the hours as a good guide, not a stopwatch.
476 pages works out to roughly 143,000 words. At an average 250 words a minute that is 9½ hrs — a weekend's reading.
Readers on Hardcover rate it 4.51 out of 5, from 8,677 ratings.
Worth-it score 8.8/10 — Well worth the time. Readers 9.1 (Hardcover's 4.51★ from 8,677 ratings) − length 0.3 = 8.8. How the score works →
How long does it take to read Project Hail Mary?
Project Hail Mary is 476 pages, or roughly 143,000 words. How long that takes depends on how fast you read:
| Your pace | Words per minute | Time to finish |
|---|---|---|
| Slow | 175 | 13½ hrs |
| Average | 250 | 9½ hrs |
| Fast | 400 | 6 hrs |
Estimated at about 300 words per page. Most adults read between 200 and 300 words a minute — set your own pace and every time on the site adjusts. Prefer to listen? At a typical narration pace of 150 words a minute the audiobook runs about 16 hrs — an estimate from the word count, since narrators vary.
Common questions
- How long does it take to read Project Hail Mary?
- About 9½ hrs at an average reading speed of 250 words per minute. Project Hail Mary runs 476 pages, roughly 143,000 words — so at a slower 175 wpm it is nearer 13½ hrs, and at 400 wpm closer to 6 hrs.
- How many pages is Project Hail Mary?
- 476 pages, which is about 143,000 words and 9½ hrs of reading. Editions vary, so we use the figure two of our sources agree on.
- Is Project Hail Mary worth reading?
- We score it 8.8 out of 10 for the time it takes — well worth the time. Readers on Hardcover rate it 4.51 out of 5 from 8,677 ratings, which counts for 9.1; at about 9½ hrs at an average pace it gives back 0.3 for its length.
- How long is the Project Hail Mary audiobook?
- About 16 hrs, estimated from the 143,000 words at a typical narration pace of 150 words a minute. Real editions vary by narrator, usually by well under an hour.
From the publisher
Ryland Grace is the sole survivor on a desperate, last-chance mission—and if he fails, humanity and the earth itself will perish.
Except that right now, he doesn’t know that.…
He can’t even remember his own name, let alone the nature of his assignment or how to complete it. All he knows is that he’s been asleep for a very, very long time. And he’s just been awakened to find himself millions of miles from home, with nothing but two corpses for company. His crewmates dead, his memories fuzzily returning, Ryland realizes that an impossible task now confronts him. Hurtling through space on this tiny ship, it’s up to him to puzzle out an impossible scientific mystery—and conquer an extinction-level threat to our species. And with the clock ticking down and the nearest human being light-years away, he’s got to do it all alone. Or does he?
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