SRT to VTT

Free SRT to VTT Converter — Online, No Upload

SRT is the standard subtitle format most caption tools export, but HTML5 video players, YouTube alternatives, and most web platforms want WebVTT. The formats are close, VTT adds a header and uses a dot instead of a comma in timestamps, but hand-editing them is error-prone. This converter does it correctly in one step, entirely on your device.

SRT → VTT converter

Runs in your browser. Nothing is uploaded — your files never leave your device.

Quick answer

To convert SRT to VTT, paste your .srt content into the converter above or pick the file, and download the result as a valid WebVTT file. The conversion runs entirely in your browser, so the file is never uploaded, there is no signup, and it works on any device.

How to convert SRT to VTT

1
Paste or pick your SRT
Paste the contents of your .srt file into the box above, or use the file picker. Nothing is uploaded; the file is read locally by your browser.
2
Check the output
The converter adds the WEBVTT header, switches millisecond commas to dots, and keeps your cue text intact. The result appears instantly.
3
Download the .vtt
Click download to save the converted file, or copy it to your clipboard. It is ready for any HTML5 player or platform that expects WebVTT.

What is the difference between SRT and VTT?

SRT (SubRip) is a plain-text subtitle format: numbered cues, timestamps with comma-separated milliseconds (00:00:01,000), and the caption text. WebVTT is the web-native evolution of it: it starts with a WEBVTT header, uses dots in timestamps (00:00:01.000), and supports styling, positioning, and voice tags that SRT does not.

Because the two formats are so close, conversion is lossless in the SRT-to-VTT direction: everything SRT can express, VTT can too. This tool preserves your cue numbering and text exactly and only changes what the format requires.

When do you need a VTT file?

The HTML5 <track> element only accepts WebVTT, so any captions on a self-hosted web video need VTT. Many platforms and players, Vimeo, JW Player, Video.js, Cloudflare Stream, and most course platforms, either require or prefer it. If a platform rejects your .srt upload, converting to .vtt is almost always the fix.

If you make short-form content, you usually go the other way: platforms burn captions into the video. That is what Wavcut does on iPhone, it transcribes your clip on-device and burns styled captions in, so there is no subtitle file to manage at all.

Frequently asked questions

Is this SRT to VTT converter really free?

Yes. It is completely free, with no signup, no watermark, and no limits. The conversion runs in your browser, so it costs nothing to provide and nothing to use.

Is my subtitle file uploaded to a server?

No. The file is read locally by your browser and converted with JavaScript on your device. It never leaves your computer or phone.

Does the converter keep my subtitle timing?

Yes. Timestamps are converted exactly, only the millisecond separator changes from a comma to a dot, as the VTT spec requires. Cue text and order are untouched.

Can I convert VTT back to SRT?

Yes, use the companion VTT to SRT converter. It strips the WEBVTT header, restores comma timestamps, and renumbers the cues.

Why does my player reject the converted file?

Check the file extension is .vtt and the first line reads WEBVTT. Some players also require the file to be served with the text/vtt MIME type; that is a server setting, not a file problem.

How do I get an SRT file from my video in the first place?

A transcription tool generates it. On iPhone, Wavcut transcribes your video on-device and can burn the captions straight into the export, so you skip subtitle files entirely for social posts.