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AiTechWorlds
AiTechWorlds
Sum clip lengths into a total video runtime, with playback-speed-adjusted duration.
Total duration
9:35
Duration at 1× speed
9:35
100% in-browser — sums individual clip/section lengths into a total runtime and shows the equivalent length at a chosen playback speed. All math runs locally, no data leaves your device.
Video Duration Calculator adds up individual clip or section lengths (hours, minutes, seconds) into a total runtime, and shows the equivalent length when watched at a different playback speed (0.5×–2×).
Add each clip or section with its length
Intro, main content, outro, etc.
Read the total duration
Sums all clips together.
Check the duration at different playback speeds
Useful for estimating watch time.
100% Private — No Server Required
All processing happens directly in your browser. No data is uploaded, stored, or transmitted to any server.
Last reviewed on July 24, 2026 by the AiTechWorlds Tools Team. All processing runs locally in your browser.
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