SRT and VTT Subtitle Converter

How to use

1. 1Pick the conversion direction. SRT to VTT prepares captions for HTML5 video and the web. VTT to SRT prepares captions for desktop players and most editing software.
2. 2Paste your subtitle file into the input on the left, or click Open .srt or .vtt file to load a file from your device. Click Load sample to see the expected format.
3. 3Optional: type a positive or negative number of seconds in Time shift to delay or advance every cue. Toggle Strip styling tags to remove HTML-like markup from cue text. Toggle Renumber cues to replace identifiers with sequential numbers.
4. 4Read the cue preview underneath to verify the parse, including the start and end times in the target format and the per-cue duration.
5. 5Use Copy to copy the converted output, or Download to save it as a .srt or .vtt file ready to upload to your video host or load into your player.

About this tool

SRT and VTT Subtitle Converter is a bidirectional tool for the two most common subtitle and caption file formats on the web. SubRip (SRT) is the lingua franca of desktop video players, torrent releases, and most editing software. WebVTT (VTT) is the format the HTML5 <track> element requires, which is what YouTube, Vimeo, and modern HTML video need. The two formats represent the same data (an ordered list of timed cues) with two small differences: SRT separates milliseconds with a comma (00:00:01,500) while VTT uses a period (00:00:01.500), and VTT files start with a literal WEBVTT header line. This converter handles those differences plus the trickier real-world cases that simple find-and-replace tools miss: VTT files with cue identifiers above the timing line, VTT cues with settings (line:90% align:center) on the timing line, voice tags (<v Speaker>...</v>) and class tags (<c.name>...</c>), CRLF and LF line endings, files that omit the hours field on the timing line, and cues with embedded HTML-like markup. Paste subtitles into the input on the left or open a .srt or .vtt file from your device, and the output appears on the right ready to copy or download. The tool also bundles three utilities that fix the most common subtitle problems while you are converting: a time-shift field that moves every cue forward or back by a signed number of seconds (positive to delay, negative to advance, decimals allowed) so subs that drift behind a re-encoded video can be re-synced in one step, a Strip styling tags option that removes italic, bold, font, voice, and class tags from cue text for platforms that reject styling, and a Renumber cues option that replaces cue identifiers with sequential 1, 2, 3 numbers (always recommended for SRT). A live cue preview underneath the editor shows every parsed cue with its index, start time, end time, duration, and text in the target format so you can verify the parse before exporting. Useful for video editors handing off captions to a CMS that needs WebVTT, content creators downloading subtitles in one format and uploading them to a platform that needs the other, language teachers fixing the timing on a downloaded transcript, accessibility teams preparing tracks for HTML5 video, and anyone moving captions between Premiere, Final Cut, OBS, YouTube, Vimeo, Plex, VLC, or HTML5 <track> elements. Everything runs locally in your browser. The subtitle files you paste, drop, or open here are never uploaded.

Free to use. Works in your browser. No signup, no login.