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Browser utility · output first
Video Duration Calculator
Add clip durations and calculate the total timeline length before assembling a video.
Inputs
One or more clip durations. Values stay in this browser.
Result
Total timeline duration in seconds and timecode
Enter the inputs and calculate to see a result.
All calculations run locally in the browser.
No source media is uploaded by these calculators. A selected file is used only for local metadata inspection.
- All calculations run locally in the browser.
- All calculations run locally in the browser.
- All calculations run locally in the browser.
Updated 2026-08-04
Frequently asked questions
Can I include speed changes?
Enter the resulting playback duration for each clip; this calculator does not inspect source media.
Can I use frame values?
The input accepts seconds or mm:ss values for quick planning.
Browser utility · output first
All calculations run locally in the browser.