Video Timecode and Frame Count Calculator

How to use Video Timecode and Frame Count Calculator

Nominal frame labels count hours/minutes/seconds/frames. Drop-frame skips2 labels per non-tenth minute at30000/1001, or4 at60000/1001. Elapsed seconds use the actual rational rate, so a timecode hour is not automatically3600seconds.

1. Enter timecode label hh:mm:ss:ff or hh:mm:ss;ff, frame count from label zero.
2. Choose the stated convention and check the units and supported model.
3. Calculate, inspect the result, then copy or download it.

Good to know

• Declared rates only; integer frames within one24-label-hour cycle. Drop-frame only30000/1001 or60000/1001, with semicolon separator. No frame deletion, video upload or transcoding.
• Runs locally. Text/JSON fields are capped at30,000 characters; stricter page-specific and numeric-string limits also apply. Numeric inputs are bounded to magnitude1e15 and nonzero magnitude at least1e-100 unless an exact-string mode states otherwise. Approximate summaries use12 significant digits; CSV numeric cells retain the complete stored value and potentially formula-like string cells gain a protective apostrophe; unsupported, non-finite or detected underflow states return an error.