Project Hail Mary audiobook length
The unabridged Project Hail Mary audiobook by Andy Weir is 16 hours 10 minutes long, read by Ray Porter.
Length at 1x
16h 10m
16:10:58, unabridged
At 1.5x
10h 47m
saves 5h 23m
At 2x
8h 05m
half the time
| Speed | Listening time | Time saved | Days at 1 hour a day |
|---|---|---|---|
| 1x | 16h 10m | - | 17 |
| 1.25x | 12h 56m | 3h 14m | 13 |
| 1.5x | 10h 47m | 5h 23m | 11 |
| 1.75x | 9h 14m | 6h 56m | 10 |
| 2x | 8h 05m | 8h 05m | 9 |
| 2.5x | 6h 28m | 9h 42m | 7 |
| 3x | 5h 23m | 10h 47m | 6 |
When will I finish?
At 1.5x and 45 minutes a day you finish in 15 days.
Length from the Apple Books listing for this edition, checked 3 October 2026. Other stores sell the same recording at the same length.
How many days to listen to Project Hail Mary
Days needed to finish the 16 hours 10 minutes recording, by how long you listen each day.
| Each day | 1x | 1.25x | 1.5x | 2x |
|---|---|---|---|---|
| 15 minutes | 65 days | 52 days | 44 days | 33 days |
| 30 minutes | 33 days | 26 days | 22 days | 17 days |
| 1 hour | 17 days | 13 days | 11 days | 9 days |
| 1.5 hours | 11 days | 9 days | 8 days | 6 days |
| 2 hours | 9 days | 7 days | 6 days | 5 days |
How long does it take to read Project Hail Mary?
Reading the book yourself takes about 10 hours 2 minutes at an average adult reading speed of 250 words a minute. Project Hail Mary is roughly 151,000 words, estimated from the audiobook at a narration pace of 155 words a minute, and print editions run about 496 pages (the middle value across 32 editions listed on Open Library).
| Reading speed | Time to read | At 1 hour a day |
|---|---|---|
| Relaxed (200 words a minute) | 12h 32m | 13 days |
| Average adult (250 words a minute) | 10h 02m | 11 days |
| Fast (300 words a minute) | 8h 21m | 9 days |
| Very fast (400 words a minute) | 6h 16m | 7 days |
Your speed: words a minute = 10h 02m. Reading is 38% faster than listening at 1x, and about the same as listening at 1.6x.
For any other book, page count or text, use the reading time calculator.
Listening faster
Most listeners are comfortable between 1.25x and 1.5x, which turns 16h 10m into 12h 56m to 10h 47m. If Ray Porter’s pace feels slow, raise the speed by 0.1x every few days. For any other book, type its length into the audiobook speed calculator.
Questions
How long is the Project Hail Mary audiobook?
The unabridged Project Hail Mary audiobook read by Ray Porter is 16 hours 10 minutes long (16:10:58).
How long is Project Hail Mary at 1.5x speed?
10 hours 47 minutes at 1.5x, 12 hours 56 minutes at 1.25x and 8 hours 5 minutes at 2x.
Who narrates the Project Hail Mary audiobook?
Ray Porter, for Audible Studios.
How long does it take to read Project Hail Mary?
About 10 hours 2 minutes at an average reading speed of 250 words a minute, for roughly 151,000 words (print editions run about 496 pages). A fast reader at 300 words a minute needs about 8 hours 21 minutes.
How many days does it take to listen to Project Hail Mary?
At an hour a day it takes 17 days at normal speed, or 11 days at 1.5x. At 30 minutes a day it takes 33 days, or 22 days at 1.5x.
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