Finds how long an audiobook or podcast actually takes to finish once played back faster than 1x speed.
How it works
The book’s original length is divided by the playback speed multiplier to give the actual listening time.
What this does not include
This does not include variable-speed listening (switching speeds partway through) — this calculator assumes a single constant speed throughout.
How to use this calculator
- Enter the book’s original length in hours and minutes, and your chosen playback speed.
Frequently asked questions
How much time does 1.5x speed actually save?
A third of the original time — a 10-hour book becomes about 6 hours 40 minutes at 1.5x.
Is there a limit to how fast I can listen and still understand?
It varies by listener and content — many people comfortably follow narration up to 2x-3x with practice, though dense or technical material may need a slower speed.
Does this work for podcasts too?
Yes — the same time-divided-by-speed math applies to any audio content played back at an adjusted speed.
