Playback speed calculator
Playback Speed Calculator
Calculate playback time instantly for audiobooks, podcasts, online courses, and videos. Enter the original length, choose a speed, and see the new duration, time saved, and finish time.
Calculate playback time
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Playback speed
At 1.5x speed, 2h 30m 0s becomes 1h 40m 0s. You save 50m 0s (33.3%).
Common speeds
Mainstream playback speeds
Most people compare 1.25x, 1.5x, 1.75x, 2x, 2.5x, and 3x for faster listening. The table also includes 0.75x and 1x, which are useful when you need a baseline or slower playback.
| Speed | Duration | Time saved |
|---|---|---|
| 1.25x | 2h 0m 0s | 30m 0s |
| 1.5x | 1h 40m 0s | 50m 0s |
| 1.75x | 1h 25m 43s | 1h 4m 17s |
| 2x | 1h 15m 0s | 1h 15m 0s |
| 2.5x | 1h 0m 0s | 1h 30m 0s |
| 3x | 50m 0s | 1h 40m 0s |
What is a playback speed calculator?
It converts the original length of an audiobook, podcast, online course, or video into the actual time it takes at a faster or slower playback speed. The result updates in the browser, so you do not need to upload a file or press a calculate button.
How the formula works
New duration equals original duration divided by playback speed. A 60 minute podcast at 1.5x takes 40 minutes, saving 20 minutes. Time saved equals original duration minus the new duration.
FAQ
Common questions
How long is 1 hour at 1.5x speed?
One hour at 1.5x speed takes 40 minutes, saving 20 minutes.
How long is a 2-hour video at 2x speed?
A 2-hour video at 2x speed takes exactly 1 hour, saving a full hour.
Does this work for podcasts and audiobooks?
Yes. The same formula works for videos, courses, podcasts, and audiobooks.
How long does a 10-hour audiobook take at 1.25x?
A 10-hour audiobook at 1.25x speed takes 8 hours. You save 2 hours.
Does this calculator work for YouTube videos?
Yes. Enter the YouTube video length, then choose the playback speed you plan to use.