Timecode calculator

How to use it

Type an expression the way you'd say it. Timecodes can be written in full, like 01:00:12:16, or short: 12:16 is 12 seconds and 16 frames, and digits alone fill in from the right like an edit system's timecode field, so 1001216 is 01:00:12:16.

• + and - add and subtract timecodes or durations.
• 4s is four seconds and 96f is 96 frames, at the rate in use.
• * 2 and / 2 multiply and divide; one timecode divided by another gives a ratio.
• @25 at the end sets the rate for that calculation, like 01:00:00:00 + 1s @25.
• A ; before the frames means drop-frame, so the rate switches to 29.97 or 59.94 DF on its own.

Frames, real time and non-drop

Every result shows the frame count and the real running time. At 23.976, 29.97 and 59.94 those differ from the timecode: an hour of 23.976 timecode runs 1 hour and 3.6 seconds of real time. For drop-frame results you also get the non-drop timecode of the same frame, handy when one system uses each.

When a number could be frames

1000000 + 24 at 23.976 can't mean 24 as timecode digits, because 23.976 counts frames 0 to 23. The calculator reads it as 24 frames, says so, and shows what it would be at 25, where it is valid timecode.