How long does a video take at different speeds?
Calculate playback time and see how much time you save
Enter time as "1h 30m", "90 minutes", or "1:30:00"
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Common Examples
| Original | Speed | New Time | Saved |
|---|---|---|---|
| 30 min | 1.5x | 20 min | 10 min |
| 1 hour | 1.5x | 40 min | 20 min |
| 1 hour | 2x | 30 min | 30 min |
| 2 hours | 1.25x | 1h 36m | 24 min |
| 2 hours | 2x | 1 hour | 1 hour |
How It Works
When you increase playback speed, the video plays faster but the content remains the same. At 2x speed, a video plays twice as fast, cutting watch time in half. This calculator divides your original video length by the playback speed to show exactly how long it will take. Most platforms (YouTube, Netflix, Udemy) support speeds from 0.25x to 2x or higher.
Frequently Asked Questions
- How much time do I save watching at 1.5x speed?
- At 1.5x speed, you save 33% of the original video time. A 60-minute video takes only 40 minutes, saving you 20 minutes.
- What is the best playback speed for learning?
- Research suggests 1.5x is optimal for most people—fast enough to save time while maintaining comprehension. Start at 1.25x and increase gradually as you adjust.
- Does watching videos faster affect retention?
- Studies show comprehension remains high up to 2x speed for familiar topics. For complex or new material, slower speeds (1.25x-1.5x) may improve retention.
- How do I calculate video time at custom speeds?
- Divide the original time by the speed. For example, a 90-minute video at 1.8x speed takes 90 ÷ 1.8 = 50 minutes.