FPS rescale · free · in your browser

Subtitle Frame Rate Converter

Rescale timing between 23.976, 25, 29.97 fps and more — proportionally, instantly.

In: SRT @ 25 fps · Out: SRT @ 23.976 fps

Frame Rate
100% in your browser

From → To Shift (ms) Frame rate → Speed (%) Keep 00:00→00:00 (s) → Two-point sync

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Drop up to 10 subtitle files

SRT · VTT · ASS · SBV · SUB · STL — 100% in your browser, nothing is uploaded

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✓ Nothing uploaded
✓ Free

Subtitles slow down after a frame-rate change?

Captions timed for a 23.976 fps film drift out of sync on a 25 fps PAL master (and vice versa). Picking the source frame rate on the left and the target on the right rescales every timestamp by the target ÷ source ratio — no manual math.

Presets cover film (23.976), 24, PAL (25), NTSC (29.97), 30, 50 and 60 fps. The whole conversion runs in your browser.

All 21 tools → or or try the free SRT ↔ VTT converter