How does timecode convert to a frame count?

The total frames equal ((HH × 60 + MM) × 60 + SS) × fps + FF. The real elapsed time then divides that frame count by the actual fractional frame rate.

Why does 29.97 fps differ from 30 fps?

NTSC rates such as 23.976 and 29.97 are fractional, so the labelled HH:MM:SS:FF clock drifts slightly from real time. This tool labels frames at the nearest whole rate and computes real time from the true fractional rate.

Is anything uploaded?

No — all calculations happen entirely in your browser.

FPS Timecode Calculator

Convert HH:MM:SS:FF timecode to frames and real time.

FPS timecode calculator

Translate a video timecode into a frame count and the real elapsed time. Pick your frame rate — 23.976, 24, 25, 29.97, 30, 50, 59.94 or 60 fps — enter the HH:MM:SS:FF timecode, and the tool returns the total number of frames plus the true running time.

Frame counts use ((HH × 60 + MM) × 60 + SS) × fps + FF, and real time is derived from the actual fractional frame rate — all computed in your browser.