⚡ 100% Free · In-Browser Tool

Free Subtitle & Caption Converter

Convert, format, and shift subtitle timestamps between SubRip (.srt), WebVTT (.vtt), Plain Text (.txt), YouTube (.sbv), QuickTime (.qt.txt), and ASS with instant preview & export.

🎯 Target Output Format:WebVTT (.vtt)

⏱ Timecode Shift / Offset:+0.0s

📝 Input Subtitles (Text Editor)3 cues

✨ Converted Output.vtt

Raw

Table (3)

WEBVTT

1
00:00:01.199 --> 00:00:04.500
Welcome to ConvertFigure Subtitle Converter!

2
00:00:05.000 --> 00:00:08.800
Convert subtitles between SRT, WebVTT, TXT, YouTube SBV, and QuickTime easily.

3
00:00:09.199 --> 00:00:13.599
All processing happens 100% locally and securely in your browser.

⚡ Quick 1-Click Conversions:

🔒

Files never uploaded

100% browser-side processing

∞

No file size limits

Process any file size

⚡

Instant conversion

No server wait time

💰

100% Free forever

No account or subscription

🚫

No watermarks

Clean output guaranteed

Free Online Subtitle Converter (SRT, VTT, TXT, SBV, QuickTime, ASS)

Convert captions and subtitles between popular formats like SubRip (.srt), WebVTT (.vtt), Plain text (.txt), YouTube (.sbv), QuickTime Text (.qt.txt), SubStation Alpha (.ass), and JSON/CSV. Edit subtitles with a free text editor, sync/shift timecodes, and export instantly with 100% browser-based privacy.

Free Online Subtitle Converter (SRT, VTT, TXT, SBV, QuickTime, ASS) — Format Comparison

Format	Extension	Timecode Format	Best Use Case	Styling Support
SubRip	.srt	00:00:01,000 --> 00:00:04,000	YouTube, VLC, Premiere, TV	Basic (italics, bold)
WebVTT	.vtt	00:00:01.000 --> 00:00:04.000	HTML5 Web Video, Safari, Chrome	Full CSS styling
YouTube	.sbv	0:00:01.000,0:00:04.000	YouTube Studio manual captions	None (plain text)
QuickTime	.qt.txt	{QTtext} [00:00:01.00]	Apple QuickTime Player / macOS	QT tags
SubStation Alpha	.ass	0:00:01.00,0:00:04.00	Anime, advanced styling, karaoke	Full colors & fonts
Plain Text	.txt	None (clean dialogue transcript)	Reading, blog posts, transcripts	None

❓ Frequently Asked Questions

Paste or upload your SRT file, select "WebVTT (.vtt)" from the format selector, and click "Download Converted File". The tool converts comma timecodes to period format and adds the WEBVTT header.

Yes! Select "Plain text (.txt)" format. The converter will automatically strip all line numbers and timestamps, leaving only clean dialogue paragraphs.

Use the Time Shift control in the editor. Enter a positive number (e.g. +1.5s) to delay captions or a negative number (e.g. -2s) to advance them, then click Apply Shift.

Never. ConvertFigure processes all subtitle parsing and conversion 100% locally inside your browser using JavaScript. Your files stay strictly private.

No limits. You can convert movie-length subtitle files with thousands of lines for free.

Yes! Upload or paste your YouTube .sbv file, choose "SubRip (.srt)", and download the converted .srt file ready for any video player.