Timecode calculator
Add or subtract two timecodes and get the result as HH:MM:SS:FF, in frames and in seconds. Everything is calculated in your browser; nothing is sent anywhere.
How timecode works
SMPTE timecode is written as hours, minutes, seconds and frames: 01:02:03:12 means one hour, two minutes, three seconds and the twelfth frame of that second. The last field depends on the frame rate: at 25 fps it runs from 00 to 24, at 30 fps from 00 to 29.
So the same timecode means a different duration at a different frame rate. Pick your project's frame rate before calculating.
Fractional rates: 23.976, 29.97 and 59.94
Cameras and editing apps often record at a fractional frame rate. The calculator treats that timecode as non-drop-frame: frames are numbered as at 24, 30 and 60, while the real duration in seconds comes out 0.1% longer. The calculator shows it separately.
Drop-frame timecode (written with a semicolon) isn't supported yet.
Where it helps
Work out a clip's length from its in and out points, shift markers by the same offset, add up the durations of several clips, or turn a timecode into a frame count for a script or an edit decision list.
Try it on your own footage
A new account gets 50 tokens: that's 25 searches in Mid mode.