Frame LedgerTimecode, accounted for.

Duration between two timecodes

Find the edit length between an in point and an out point.

Calculator inputs

HH:MM:SS:FF or digits. Both positions use the same rate.

Elapsed timecode

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Whole frames
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Actual seconds
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Press Calculate to resolve the example.

Subtract positions, not printed digits

Duration frames = end frame position − start frame position. The out point is exclusive: from frame 0 to frame 24 contains 24 frames, not 25. For an overnight crossing, add one 24-hour timecode cycle only if the end is earlier than the start.

Worked example

At 24 fps, 01:00:00:00 to 01:01:30:00 is 00:01:30:00 = 2,160 frames = 90 seconds. At 29.97 DF, 23:59:59;29 to 00:00:00;00 is one frame when “Cross midnight” is selected.

Assumptions and limits

Both points must share the selected frame rate and DF/NDF convention. Without midnight crossing, an earlier end produces a negative duration. Midnight mode accepts only nonnegative clock labels below 24 hours; identical endpoints mean zero, not a full day.

For supported rates and input formats, see the frame-rate reference on the calculator home page.

Choose another timecode task

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