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Audiobook Speed Calculator
See how much time faster playback really saves. Enter the length of an audiobook, podcast or lecture and a playback speed to get the new listening time and the time saved, plus how many days it will take at your usual daily listening time.
- Time saved
- 3 h 30 min
- Days to finish
- 7 days
- Time cut by
- 33.3%
Saved setups
Save a set of inputs you reuse — your usual rate, your loan, your room sizes — and load it back in one tap.
Your recent calculations
Results you calculate here are kept on this device so you can come back to them.
Formula
How to use it
- Enter the length in hours and minutes.
- Enter the playback speed, such as 1.25, 1.5 or 2.
- Enter how many minutes you listen on a typical day.
- Read the new listening time and how long it will take to finish.
Worked examples
A 10 hour 30 minute audiobook at 1.5×, listening an hour a day
- Listening time
- 7 h
- Time saved
- 3 h 30 min
- Days to finish
- 7 days
- Time cut by
- 33.3%
An 8-hour audiobook at 1.25×, listening 45 minutes a day
- Listening time
- 6 h 24 min
- Time saved
- 1 h 36 min
- Days to finish
- 8.5 days
- Time cut by
- 20%
How much each speed saves
1.25× cuts listening time by 20%. 1.5× cuts it by a third. 1.75× cuts it by 43%, 2× halves it and 3× cuts it by two thirds. The gains shrink as you go faster: moving from 1× to 1.5× saves 20 minutes of every hour, but moving from 1.5× to 2× saves only 10 more.
A 10-hour audiobook takes 8 hours at 1.25×, 6 hours 40 minutes at 1.5×, 5 hours 43 minutes at 1.75× and 5 hours at 2×.
Finding a comfortable speed
Audiobook narrators typically read at about 150 words a minute, noticeably slower than normal conversation, which is why many listeners find 1.25× to 1.5× comfortable. Build up gradually — a small step feels fast for a few minutes and then sounds normal.
Slow down for dense material, unfamiliar accents or anything you need to remember. The same arithmetic works below 1×: at 0.75×, a 60-minute recording takes 80 minutes.
Questions people ask
How long is a 10-hour audiobook at 1.5× speed?
6 hours 40 minutes, saving 3 hours 20 minutes.
How long is a 1-hour podcast at 2× speed?
30 minutes. At 1.5× it is 40 minutes and at 1.25× it is 48 minutes.
How much time does 1.25× speed save?
20% — 12 minutes of every hour. An 8-hour book takes 6 hours 24 minutes.