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SRT / VTT Subtitle Converter
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This converter switches subtitle files between the two most common formats — SRT (SubRip, used by many video players and editors) and WebVTT (the format required by HTML5 <track> elements and most web video players). The two formats are nearly identical in structure but differ in their timestamp separator (SRT uses a comma before milliseconds, VTT uses a period) and VTT requires a WEBVTT header while its cue numbers are optional. Paste your subtitle content, choose a direction, and get correctly reformatted output instantly. Everything runs locally in your browser — subtitle content is never uploaded. Scroll down to paste your subtitles.
Features
- Converts SRT to WebVTT and back
- Correctly handles the comma/period timestamp difference
- Adds the required WEBVTT header when converting to VTT
- Adds sequential cue numbers when converting to SRT
- Validates that pasted content matches the expected format
Why use this srt / vtt subtitle converter?
- Faster than manually find-and-replacing timestamps
- Avoids subtle formatting mistakes that break subtitle players
- Fully private — nothing uploaded
- Free with unlimited use
Frequently asked questions
What's the difference between SRT and WebVTT?
They're structurally very similar — the main technical differences are the timestamp separator (comma in SRT, period in VTT) and that VTT requires a WEBVTT header and supports additional styling/positioning cues that SRT doesn't.
Why would I need WebVTT instead of SRT?
HTML5 video's native <track> element (used for captions on the web) requires the WebVTT format specifically — SRT files need to be converted first to work with native browser video captions.
Does this preserve subtitle text and timing exactly?
Yes, only the timestamp separator and header/numbering are changed — the actual subtitle text and timing values are preserved exactly.
Does this support advanced WebVTT features like positioning cues?
No, this handles the core conversion (timestamps, headers, numbering); advanced VTT-only features like cue positioning or styling tags aren't generated or removed, just passed through as-is if already present.
Can I convert multiple subtitle files at once?
No, this tool processes one file's content at a time — paste each file individually.