Free SRT to ASS subtitle converter

Convert SubRip subtitles into a conventional Advanced SubStation Alpha v4.00+ file with FFmpeg-compatible sections, styles, Dialogue events, and centisecond timestamps.

What this free tool does

• SRT to ASS v4.00+ conversion
• FFmpeg and Aegisub compatible output
• Basic inline formatting conversion
• Local browser-based processing

Files are processed locally in your browser and are not uploaded to AutoCaptions.