PrivTab

Timecode Calculator

Convert and add up SMPTE timecodes without counting frames by hand.

Runs in your browser · No uploads

Convert

Type in any box; the others follow.

Add or subtract

–
What is drop-frame timecode?

29.97 and 59.94 fps video runs slightly slower than 30 and 60 fps. Drop-frame timecode skips frame numbers 00 and 01 (00–03 at 59.94) at the start of every minute, except every tenth minute, so the timecode stays in step with the clock. No video frames are dropped, only numbers. It is written with a semicolon before the frames: 00:01:00;02.

  • Nothing leaves your device
  • No server-imposed size limits
  • No sign-up, no watermark
  • Free

How to use it

  1. Pick the frame rate of your project.
  2. Enter a timecode, a frame count or seconds to convert it.
  3. Or add and subtract timecodes, for example to total the length of clips.

Drop-frame timecode

At 29.97 and 59.94 fps, drop-frame timecode skips frame numbers 00 and 01 (00–03 at 59.94) at the start of each minute, except every tenth minute, so the timecode matches the clock. It is written with a semicolon: 00:10:00;00. Non-drop-frame timecode counts every frame and drifts about 3.6 seconds per hour from the clock.

Frame rates

  • 23.976, 24, 25, 29.97 (drop and non-drop), 30, 48, 50, 59.94 (drop and non-drop) and 60 fps.
  • Frame numbers that don't exist in drop-frame timecode are reported as errors.

Calculated in your browser

The calculations run in your browser as you type. Nothing you enter is sent anywhere.

Frequently asked questions

How many frames is one hour at 29.97 drop-frame?

107,892 frames.

Why does my timecode use a semicolon?

A semicolon (or a period) before the frames marks drop-frame timecode.