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 |
|---|---|---|---|---|
| 5 minutes | 4m 0s | 3m 20s | 2m 51s | 2m 30s |
| 10 minutes | 8m 0s | 6m 40s | 5m 43s | 5m 0s |
| 15 minutes | 12m 0s | 10m 0s | 8m 34s | 7m 30s |
| 20 minutes | 16m 0s | 13m 20s | 11m 26s | 10m 0s |
| 30 minutes | 24m 0s | 20m 0s | 17m 9s | 15m 0s |
| 40 minutes | 32m 00s | 26m 40s | 22m 51s | 20m 00s |
| 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 |
| 3 hours (120 min) | 2h 24m 0s | 2h 0m 0s | 1h 42m 51s | 1h 30m 0s |
| 4 hours (240 min) | 3h 12m 0s | 2h 40m 0s | 2h 17m 9s | 2h 0m 0s |
| 5 hours (300 min) | 4h 0m 0s | 3h 20m 0s | 2h 51m 26s | 2h 30m 0s |
| 6 hours (360 min) | 4h 48m 0s | 4h 0m 0s | 3h 25m 43s | 3h 0m 0s |
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).