Timecode Converter: Frames to Timecode and Back

What it is for on a rythmo band. A rythmo band is a scrolling dubbing script synced to your video: each line sits at a precise timecode. To adjust the timings of a line, check a spotting note, or carry over a time from an editing tool, you need to move between timecode, frames and seconds without mistakes.

In dubbing and post-production, positions are not given in plain seconds but in timecode: hours, minutes, seconds and frames (HH:MM:SS:FF). The last two digits count frames, and how high they go depends on the frame rate of the project: 24 fps for film, 25 fps for European television, 30 fps for a lot of online video.

This timecode converter works both ways: it turns a timecode into a total frame count and into seconds, or turns a frame count into timecode. It is handy for checking a spotting note, preparing a loop list, comparing two versions of the same film, or turning a subtitle time in milliseconds into a frame-accurate timecode.

All math is done on whole frames, with no rounding drift. Timecode is non-drop-frame, which is what most dubbing and editing workflows use outside US broadcast. Everything happens in your browser: no file is ever sent to a server.