🎧 Audiobook Length Calculator
Calculate total listening time by word count, page count, or direct time input — at any playback speed
| Genre | Avg Word Count | Avg Pages | Avg Length (1x) | Avg Length (1.5x) |
|---|---|---|---|---|
| Literary Fiction | 80,000 – 100,000 | 300 – 400 | 9 – 11 hrs | 6 – 7.5 hrs |
| Thriller / Mystery | 70,000 – 110,000 | 280 – 440 | 8 – 12 hrs | 5.5 – 8 hrs |
| Fantasy / Sci-Fi | 100,000 – 300,000 | 400 – 1200 | 11 – 33 hrs | 7.5 – 22 hrs |
| Self-Help | 40,000 – 70,000 | 160 – 280 | 4.5 – 8 hrs | 3 – 5.5 hrs |
| Business / Non-Fiction | 50,000 – 80,000 | 200 – 320 | 5.5 – 9 hrs | 3.5 – 6 hrs |
| Biography / Memoir | 80,000 – 120,000 | 320 – 480 | 9 – 13 hrs | 6 – 9 hrs |
| Children's / MG | 10,000 – 50,000 | 40 – 200 | 1 – 5.5 hrs | 0.7 – 3.5 hrs |
| Novella | 17,500 – 40,000 | 70 – 160 | 2 – 4.5 hrs | 1.5 – 3 hrs |
| Playback Speed | 8 hr Book | 12 hr Book | 20 hr Book | Time Saved |
|---|---|---|---|---|
| 0.75x | 10 hr 40 min | 16 hr 0 min | 26 hr 40 min | –33% (longer) |
| 1.0x | 8 hr 0 min | 12 hr 0 min | 20 hr 0 min | Baseline |
| 1.25x | 6 hr 24 min | 9 hr 36 min | 16 hr 0 min | 20% saved |
| 1.5x | 5 hr 20 min | 8 hr 0 min | 13 hr 20 min | 33% saved |
| 1.75x | 4 hr 34 min | 6 hr 51 min | 11 hr 26 min | 43% saved |
| 2.0x | 4 hr 0 min | 6 hr 0 min | 10 hr 0 min | 50% saved |
| 2.5x | 3 hr 12 min | 4 hr 48 min | 8 hr 0 min | 60% saved |
| 3.0x | 2 hr 40 min | 4 hr 0 min | 6 hr 40 min | 67% saved |
| Book Length | 30 min/day | 1 hr/day | 2 hrs/day | 3 hrs/day |
|---|---|---|---|---|
| 4 hours (short) | 8 days | 4 days | 2 days | 1.3 days |
| 8 hours (average) | 16 days | 8 days | 4 days | 2.7 days |
| 12 hours (long) | 24 days | 12 days | 6 days | 4 days |
| 20 hours (epic) | 40 days | 20 days | 10 days | 6.7 days |
| 33 hours (doorstop) | 66 days | 33 days | 16.5 days | 11 days |
ACX (Audible's production standard) uses 9,300 words per finished hour as the benchmark at 150 wpm narration. If you know your manuscript word count, use that for the most precise estimate.
Printed pages vary widely — paperbacks average 250 words/page, but hardcovers can reach 300+. Use the words-per-page selector to match your edition for a more accurate calculation.
The typical audiobook lasts between 8 and 12 hours. That range covers various kinds, from short stories to massive fantasy epics. The average length actually fell slowly through the years, even so it usually stays around 8 to 10 hours.
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Common audiobooks match to around 300 to 350 pages in printed book.
How Long Are Audiobooks?
Genre affects strongly the final Audiobook Length. Easy romantic novel involves fewer pages and time than complex fantasy epic. Romantic books with 50 000 to 60 000 words work well as digital books, while lengths of 60 000 to 70 000 words last almost 7 to 8 hours in audio.
Fantasy audiobooks commonly extend much more. For instance one fantasy novel did a 13-hour audiobook, but the next in the same series turned out shorter.
So there are really long samples. Some audiobooks pass 20 hours and deserve the investment of time to listen to them. One of them reaches a massive 41 hours and 47 minutes.
The Final Empire by Brandon Sanderson in the series Mistborn lasts around 28.93 hours. The Way of Kings is almost 40 hours long. Such giants with 1 000 pages in fantasy stay exceptions on the chart of audiobooks.
Counting by words helps to estimate the Audiobook Length. On average, every 9 150 words match to one full hour of audio. ACX points to 9 300 words for one hour, while Findaway Voices use a bit different number.
Like this, a book with 80 000 words results in around 10 hours of recording. A narrator can speak around 8 000 words each hour during the proccess.
Size of files gives another useful sign. Average recording of an audiobook uses 28 MB each hour, so a typical 10-hour book needs around 280 MB. Higher quality ranges between 30 and 60 MB each hour, according to quality and format.
Settings of speed alter the time to listen greatly. An audiobook of 4 hours at 1.5x speed ends after only 160 minutes, so 2 hours and 40 minutes. Online it is possible too find calculators for audiobooks that do such math automatically.
One listener finished 49 audiobooks in one year, which added up to 576.02 hours. This averages around 11 hours and 45 minutes each book. Audiobook Length of the same book can change according to the speed of the narrator.
Some audiobooks tie two written volumes in one, which changes the duration. Full versions always run longer than shortened ones, and shortened ones commonly cut so that the plot barely stays together. On websites like Goodreads, the “page count” for an audiobook actually shows thelength in hours, rounded upward.
