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Free audiobook speed calculator. Enter book length and how long you want to listen — get required playback speed, time at your current speed, percent saved vs 1×, and a speed chart for Audible, Apple Books, and other apps.
Last updated: May 24, 2026
Hours
Minutes
Hours
Minutes
Required speed for target time
1.42×
Nearest common setting: 1.5× · Optimal (most listeners)
At 1.25× now
6h 48m
Saved vs 1×
1h 42m (20%)
Strong time savings with minimal comprehension loss for familiar nonfiction.
Speed chart (this book)
Runtime, target time, required × speed, and whether that speed is realistic for comprehension.
1.42×
8h 30m book → 6h target · use 1.5× in app
6h 48m
Saves 1h 42m vs 1×
Optimal (most listeners)
Strong time savings with minimal comprehension loss for familiar nonfiction.
Required
1.42×
At 1.25×
6h 48m
Saved vs 1×
20%
14-day plan
26 min/day
| Speed | Listen time | Time saved vs 1× |
|---|---|---|
| 1.0x | Same as runtime | 0% |
| 1.25x | 80% of runtime | 20% |
| 1.5x | 67% of runtime | 33% |
| 1.75x | 57% of runtime | 43% |
| 2.0x | 50% of runtime | 50% |
| 2.5x | 40% of runtime | 60% |
| 3.0x | 33% of runtime | 67% |
| Speed | Total listen time | Saved |
|---|---|---|
| 1× | 10h 0m | 0% |
| 1.25× | 8h 0m | 20% |
| 1.5× | 6h 40m | 33.3% |
| 1.75× | 5h 43m | 42.9% |
| 2× | 5h 0m | 50% |
| 2.5× | 4h 0m | 60% |
| 3× | 3h 20m | 66.7% |
| Content | Typical range | Notes |
|---|---|---|
| Plot-driven fiction / thriller | 1.5x – 2.0x | Dialogue-heavy; less need to pause for diagrams |
| Business / self-help nonfiction | 1.25x – 1.75x | Default sweet spot for many commuters; slow for dense stats |
| Technical / textbook-style | 1.0x – 1.25x | Equations, code, or jargon need rewind time |
| Memoir / author-read | 1.0x – 1.5x | Performance and emotion often worth normal pace |
| Language learning | 0.75x – 1.0x | Pronunciation practice beats raw speed |
listen_time_minutes = book_runtime_minutes ÷ playback_speed
required_speed = book_runtime_minutes ÷ target_minutes
percent_saved = (1 − 1/speed) × 100
Tap speed icon; custom speeds up to 3.5x on many titles
Settings → Audiobooks → playback speed per book
Speed often 0.5x–3.5x; audiobooks vary by publisher
Limited speed options — check title permissions
Listen time: 10h 0m
1.5× → 6h 40m (33.3% saved)
Need 1.5× · use 1.5× preset
Optimal (most listeners)
Week 1: 1.1× · Week 2: 1.25× · Week 3: 1.4×
Add 0.25× when you rewind < once per hour
Share with audiobook listeners and commuters
Suggested hashtags: #Audiobooks #Audible #SpeedListening #Productivity #Calculator