Playback Speed Calculator
Calculate the actual duration of a video or audio when played at a different speed. Enter the original duration and the playback speed multiplier to see the new duration.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Playback Speed Calculator
- Enter the original duration in hours (HH), minutes (MM), and seconds (SS) using the three input fields. Each field accepts whole numbers; minutes and seconds must be between 0 and 59.
- Enter the playback speed as a decimal number (e.g.,
1.5for 1.5x,2for 2x,0.5for half speed). The speed must be greater than 0. - Click "Calculate" to see the new duration. The result shows hours, minutes, and seconds after adjusting for the speed change.
- Review the formula explanation below the result to understand the calculation: original duration ÷ speed = new duration.
Tip: If you enter an invalid time (e.g., minutes > 59) or a speed of 0 or less, the calculator will show an error. Use the real-time validation to correct inputs as you type.
Previous Results
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Frequently Asked Questions
Divide the original total time (in seconds) by the playback speed multiplier. For example, a 60-minute video at 1.5x speed takes 40 minutes.
Any positive number greater than 0. Common speeds include 0.5x (half speed), 1x (normal), 1.25x, 1.5x, 2x, etc.
The calculator rounds seconds to the nearest integer. For precise results, use exact values.