How do I convert an SRT file to VTT?

Paste the SRT above and choose WebVTT. The converter adds the required WEBVTT header, changes the comma in each timestamp to a full stop, and drops the cue numbers, which VTT treats as optional.

What is the difference between SRT and WebVTT?

WebVTT is the format browsers accept for the HTML track element. It adds a header line, uses a full stop before milliseconds, and supports cue settings and styling that SRT has no way to express.

Why do my subtitles drift out of sync?

Usually a frame-rate conversion. Film shot at 23.976 fps and sped up to 25 for PAL runs about 4 per cent short, so subtitles timed for one gradually separate from the other. Scaling the timeline fixes it; a fixed offset does not.

What is a good subtitle reading speed?

Around 17 characters per second for general audiences, with 21 as an upper limit. This tool reports the fastest cue in the file so you can find the ones that need splitting or holding longer.

Can I get a plain transcript from subtitles?

Yes — choose the transcript output and the timing is dropped, leaving one line of dialogue per cue. It is a quick way to turn captions into something you can search or edit as prose.

Subtitle Converter

Convert between SRT, WebVTT, SBV and ASS subtitles, and fix timing that drifts or arrives late.

The Subtitle Converter runs entirely in your browser. The subtitle text you paste is parsed and rewritten on your device and never uploaded.

Open the Video Trimmer

About Subtitle Converter

SRT, WebVTT, SBV and ASS all store the same three things — a start time, an end time and some text — and differ mainly in punctuation. SRT numbers its cues and separates times with a comma; WebVTT wants a header and a full stop; SBV puts both times on one comma-separated line; ASS buries them in Dialogue records with a style name. Converting is therefore lossless in the direction that matters: every cue is read into milliseconds and written back in the shape the target format expects. The same normalised timeline makes the two common repairs easy — shifting subtitles that start late, and stretching a file timed for 23.976 fps that is being played at 25.

Features

Reads SRT, WebVTT, SBV and ASS, detecting the format automatically
Writes SRT, WebVTT, SBV, ASS or a plain transcript
WebVTT cue settings such as line and position preserved
ASS override tags stripped and line breaks normalised
Shift every cue by a number of seconds, forwards or backwards
Frame-rate presets for the 23.976, 24, 25 and 29.97 mismatches
Reports overlapping and zero-length cues
Reading-speed check in characters per second

How to use the Subtitle Converter

Paste the subtitle file, or the part of it you want to convert
Pick the output format — the input format is detected for you
Shift the timing or apply a frame-rate conversion if the subtitles drift
Copy or download the converted file

Example

Input

1
00:00:01,500 --> 00:00:04,000
Hello there.

Output

WEBVTT

00:00:01.500 --> 00:00:04.000
Hello there.

The difference between SRT and WebVTT is a header and a decimal point — which is still enough to make a browser refuse the file.

Common errors & troubleshooting

A browser refuses to load an SRT file. — HTML video only accepts WebVTT. Convert to VTT here — the difference is the WEBVTT header line and full stops instead of commas in the timestamps.
Subtitles start in sync but drift further out as the film goes on. — That is a frame-rate mismatch, not an offset. Use the frame-rate presets: a file timed for 23.976 fps played at 25 runs about 4 per cent fast, and the drift grows steadily.
Subtitles are consistently a couple of seconds early or late. — A constant offset — use the shift box. Positive values delay the subtitles, negative values bring them forward, and cues are clamped so nothing lands before zero.

Frequently asked questions

How do I convert an SRT file to VTT?: Paste the SRT above and choose WebVTT. The converter adds the required WEBVTT header, changes the comma in each timestamp to a full stop, and drops the cue numbers, which VTT treats as optional.
What is the difference between SRT and WebVTT?: WebVTT is the format browsers accept for the HTML track element. It adds a header line, uses a full stop before milliseconds, and supports cue settings and styling that SRT has no way to express.
Why do my subtitles drift out of sync?: Usually a frame-rate conversion. Film shot at 23.976 fps and sped up to 25 for PAL runs about 4 per cent short, so subtitles timed for one gradually separate from the other. Scaling the timeline fixes it; a fixed offset does not.
What is a good subtitle reading speed?: Around 17 characters per second for general audiences, with 21 as an upper limit. This tool reports the fastest cue in the file so you can find the ones that need splitting or holding longer.
Can I get a plain transcript from subtitles?: Yes — choose the transcript output and the timing is dropped, leaving one line of dialogue per cue. It is a quick way to turn captions into something you can search or edit as prose.

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Video Converter — Convert MOV, MKV, AVI, WebM and MP4 videos to MP4 or WebM in your browser — nothing uploaded.