Project Hail Mary
At your speed≈ 10 hrs
Pages496
Audiobook≈ 16½ hrs
496 pages works out to roughly 149,000 words. At an average 250 words a minute that is 10 hrs — about a week of evenings.
Readers on Hardcover rate it 4.50 out of 5, from 7,724 ratings.
How long does it take to read Project Hail Mary?
Project Hail Mary is 496 pages, or roughly 149,000 words. How long that takes depends on how fast you read:
| Your pace | Words per minute | Time to finish |
|---|---|---|
| Slow | 175 | 14 hrs |
| Average | 250 | 10 hrs |
| Fast | 400 | 6 hrs |
Estimated at about 300 words per page. Most adults read between 200 and 300 words a minute — use the reading-speed control to set your own pace and every time on the site adjusts.
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.
Common questions
- How long does it take to read Project Hail Mary?
- About 10 hrs at an average reading speed of 250 words per minute. Project Hail Mary runs 496 pages, roughly 149,000 words — so at a slower 175 wpm it is nearer 14 hrs, and at 400 wpm closer to 6 hrs.
- How many pages is Project Hail Mary?
- 496 pages, which is about 149,000 words and 10 hrs of reading. Editions vary, so we take the figure two of our three sources agree on.
- Is Project Hail Mary worth reading?
- Readers on Hardcover rate it 4.50 out of 5, from 7,724 ratings. What we can tell you for certain is the cost: 496 pages and about 10 hrs of your time, or 6 hrs if you read quickly. Whether that is worth it depends on the hours you have.
- How long is the Project Hail Mary audiobook?
- About 16½ hrs, estimated from the 149,000 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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