Calculate new audiobook duration at any playback speed and time saved — perfect for planning listening sessions.
Calculate new audiobook duration at any playback speed and time saved — perfect for planning listening sessions.
Enter values above and click Calculate — results will appear here with the formula explained.
Playback speed divides original duration. At 1.25×, a 12-hour book takes 9 hours 36 minutes. At 2.0×, it halves to 6 hours.
Time saved is original minus new. Use this to plan commutes or challenge deadlines.
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Playback speed divides original duration. At 1.25×, a 12-hour book takes 9 hours 36 minutes. At 2.0×, it halves to 6 hours. Formula: New duration = original / speed; Saved = original - new
Audiobook Speed Calculator: Calculate new audiobook duration at any playback speed and time saved — perfect for planning listening sessions. Formula: New duration = original / speed. Example: 12 hours 30 minutes at 1.
Calculate new audiobook duration at any playback speed and time saved — perfect for planning listening sessions. Formula: New duration = original / speed; Saved = original - new
| Field | What to enter |
|---|---|
| Original duration | HH:MM or decimal hours |
| Playback speed | e.g. 1.25 |
All fields use the exact formulas shown below — results include step-by-step breakdowns you can verify by hand.
Playback speed divides original duration. At 1.25×, a 12-hour book takes 9 hours 36 minutes. At 2.0×, it halves to 6 hours.
Time saved is original minus new. Use this to plan commutes or challenge deadlines.
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AdSense ready — add NEXT_PUBLIC_GOOGLE_ADSENSE_PUBLISHER_ID
12 hours 30 minutes at 1.25× = 10 hours, saving 2 hours 30 minutes. At 1.5× = 8 hours 20 minutes, saving 4 hours 10 minutes.
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