Frame Calc
A browser-based millisecond to frame converter. Enter a value in milliseconds or frames and get the conversion instantly at any frame rate — including custom fps values.
How it works
MS to frames
Enter a duration in milliseconds and get the equivalent frame count at the selected frame rate. Useful for syncing audio events to video.
Frames to MS
Convert a frame count back to milliseconds. Instantly see how long any number of frames lasts at any frame rate.
Custom frame rate
Enter any fps value, not just standard presets. Useful for non-standard frame rates used in specific workflows or hardware.
Reference panel
Live reference panel shows the duration of 1 frame and 1 second in ms, plus the equivalent timecode — at a glance, without any input.
No installation
Runs entirely in the browser. No app to install, no account needed. Works on desktop, tablet, and phone.
Get in touch
Found a bug or have a feature request? Open an issue or start a discussion on GitHub.