What is the difference between SRT and VTT?

Both are text caption formats. WebVTT (.vtt) is used by HTML5 video and starts with a WEBVTT header and uses dot decimals; SubRip (.srt) uses comma decimals and numeric cue indexes. The tool converts between them.

Are my subtitle files uploaded?

No. Conversion is pure text processing done in your browser; your captions are never sent to a server.

Subtitle Converter

Convert caption files between SRT and WebVTT in both directions, fixing the header and timestamp format automatically. Copy or download the result — all client-side.

Files never leave your browser

Input (SRT)

Output (VTT)

WEBVTT

1
00:00:01.000 --> 00:00:04.000
Hello world

2
00:00:05.000 --> 00:00:08.000
Second subtitle line

How to use Subtitle Converter

Convert subtitles between SRT and VTT online. Paste or upload your captions and convert formats instantly. Free, private subtitle converter in your browser.

Open Subtitle Converter using the tool above — no sign-up needed
Enter your data or upload a file (processed entirely in your browser)
Click the action button and get your result instantly
Copy to clipboard or download your result

Your data never leaves your device — 100% private processing.

Frequently Asked Questions

Free · No spam

Get weekly tool tips & updates

New tools, power-user tips, and productivity hacks — delivered free every Friday.

No spam, ever. Unsubscribe with one click.

Why use Subtitle Converter?

Powered by FFmpeg running directly in the browser — no upload needed
Supports all major video and audio formats
Lossless and lossy options for quality control
Export results immediately without waiting for cloud processing

Common use cases

Compress a video before uploading to Google Drive
Extract audio from a video lecture for easy listening
Trim a video clip for a social media reel
Convert MOV files to MP4 for cross-platform compatibility
Merge two audio tracks for a podcast episode

Related Audio & Video

Online Voice Recorder

Record your voice online with a free microphone recorder. Capture audio in your browser and download it — no installs, no uploads. Private and free.

Online Screen Recorder

Record your screen online for free. Capture a tab, window, or whole screen with optional audio, then download the video. No installs, private, in your browser.

Case Converter

Convert text to camelCase, PascalCase, snake_case, kebab-case, UPPERCASE, lowercase, Title Case, and Sentence case instantly.

Video to MP3 Converter

Extract audio from any video file and convert it to MP3 directly in your browser. No upload, no account needed.

Video Trimmer & Cutter

Trim and cut videos online — set start and end times to extract the exact clip you want. Works in your browser.

Mute Video

Remove the audio track from any video file online. Keep the original video quality while stripping the sound — free, private, and instant.

Explore all Audio & Video.