Free Video Tools
Frame-rate Duration Calculator
Convert frame counts, duration, and frame rates for timing and retiming decisions.
What this tool does
The calculator links total frames, source FPS, target FPS, and playback duration without applying drop-frame numbering.
Convert frame counts, duration, and frame rates for timing and retiming decisions.
The calculator links total frames, source FPS, target FPS, and playback duration without applying drop-frame numbering.
Use the tool
Calculate frames and duration
Enter a frame count and source or target rate.
Frames and playback rate
Live result
8.000 sec
Target playback duration
- Source duration
- 10.000 sec
- Speed change
- 125%
- Duration difference
- -2.000 sec
How to use it
Three quick steps
- 1Enter a frame count and source or target rate.
- 2Review real-time and conform-playback durations.
- 3Verify the result in its real production context. SMPTE drop-frame timecode and frame interpolation require separate workflow decisions.
Worked example
Example: Frame-rate Duration Calculator
Calculate how long 240 frames play at 24, 25, and 30 fps.
FAQ
Questions about the frame-rate duration calculator
Practical details about using the tool and understanding its result.
Keep working
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