How to Calculate Playback Speed
To calculate how long a video will take at a faster speed, divide the total duration of the video (in seconds or minutes) by the playback speed multiplier. The standard formula is New Duration = Original Duration รท Playback Speed.
For example, to calculate a 1-hour (60 minutes) video at 1.75x speed: divide 60 by 1.75 to get 34.28 minutes (34 minutes and 17 seconds). You save over 25 minutes of watch time.
How to Use the Playback Speed Calculator
- Enter the length of your video or audio in Hours, Minutes, and Seconds.
- View the instant watch time calculations for each playback speed in the breakdown list.
- Compare total time saved across speeds ranging from 1.1x to 2.5x.
Popular Playback Speed Quick Reference
Here are quick calculations for common video durations across popular playback speeds:
| Original Duration | At 1.25x | At 1.5x | At 1.75x | At 2x |
|---|---|---|---|---|
| 50 minutes | 40m 00s | 33m 20s | 28m 34s | 25m 00s |
| 1 hour (60 min) | 48m 00s | 40m 00s | 34m 17s | 30m 00s |
| 2 hours (120 min) | 1h 36m 00s | 1h 20m 00s | 1h 08m 34s | 1h 00m 00s |
| 4 hours (240 min) | 3h 12m 00s | 2h 40m 00s | 2h 17m 08s | 2h 00m 00s |
Time Saved Summary
- 1.25x Speed: Saves 20% of total video duration (12 minutes per hour).
- 1.5x Speed: Saves 33.3% of total video duration (20 minutes per hour).
- 1.75x Speed: Saves 42.8% of total video duration (approx. 25.7 minutes per hour).
- 2.0x Speed: Cuts watch time in half, saving 50% of total duration (30 minutes per hour).