Timecode Calculator
A professional, frame-accurate timecode calculator for video editors and post-production work. Add, subtract, multiply, and divide timecodes, convert between frames and seconds, and calculate clip durations. Supports all standard frame rates including drop-frame.
Selected: 24 (Film)
If you work in video editing or post-production, you've almost certainly wrestled with timecode math at some point — figuring out exactly where a clip ends, how long a gap is, or what frame number you're looking at when the timeline shows 01:23:45:12. This calculator is built to handle all of that.
The Timecode Calculator works with the standard HH:MM:SS:FF format (hours, minutes, seconds, frames) and supports every common frame rate: 23.976, 24, 25, 29.97 DF, 29.97 NDF, 30, 50, 59.94 DF, 59.94 NDF, and 60 fps. Whether you're cutting a feature film at 24fps, delivering broadcast content at 29.97 drop-frame, or working on web video at 30fps, the calculator has you covered.
It runs in three modes: Calculator for timecode arithmetic, Converter for switching between timecode, frames, and seconds, and Duration for finding the length between an IN and OUT point.
📖 How to Use
Calculator Mode
- Select your frame rate from the dropdown (23.976, 24, 25, 29.97 DF, 30, etc.).
- Choose your operation: Add (+), Subtract (−), Multiply (×), or Divide (÷).
- Enter your timecodes in HH:MM:SS:FF format — for example, 01:30:15:12.
- The result appears instantly with frame-accurate precision.
- Hit the Copy button to grab the result for your NLE or notes.
Converter Mode
- Select your frame rate.
- Enter a value in any of the three formats: timecode (HH:MM:SS:FF), total frames, or total seconds.
- All three representations update instantly so you can see each side-by-side.
Duration Mode
- Enter your clip's IN point (start timecode).
- Enter your clip's OUT point (end timecode).
- The duration calculates automatically and is shown in timecode, total frames, and total seconds.
Keyboard Shortcuts
- Tab — move between input fields quickly
- Enter — run the calculation
- Esc — clear all fields
- For drop-frame timecodes, you can use a semicolon before the frame count: HH:MM:SS;FF
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💡 Quick Reference
- Timecode: HH:MM:SS:FF
- Drop-Frame: HH:MM:SS;FF
- 24, 25, 29.97, 30, 60 fps
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