How do I convert SRT to ASS?

Paste your SRT content or drop the file into the converter, then click Convert. The ASS output appears instantly and can be copied or downloaded.

Can I edit the styling after converting?

Yes. The generated file is a standard ASS v4.00+ script with a single 'Default' style in the [V4+ Styles] section. Open it in Aegisub or any text editor to change the font, size, colors and alignment.

Is my subtitle file uploaded anywhere?

No. Conversion happens locally in your browser with JavaScript. Your file never leaves your device.

SRT to ASS Converter — Free, Private, Instant

Convert SubRip (.srt) subtitles to Advanced SubStation Alpha (.ass) — instantly, right in your browser.

Why convert SRT to ASS?

ASS (Advanced SubStation Alpha) is the format of choice when you need more than plain text: custom fonts, colors, outlines, positioning on screen, fade effects and karaoke timing. Players like mpv, MPC-HC, VLC and PotPlayer render ASS styling faithfully, and Aegisub — the standard subtitling editor — works natively in it.

What you get

A complete, valid ASS v4.00+ script — [Script Info], [V4+ Styles] and [Events] sections
A sensible Default style (Arial 20, white with black outline, bottom-center alignment) ready to tweak
Multi-line SRT cues become \N line breaks in the Dialogue text
Millisecond precision preserved — SRT's 00:01:02,340 becomes 0:01:02.34

Common workflow

Convert your SRT here → open the .ass file in Aegisub → adjust the style once in the Style Manager → every cue updates instantly. Much faster than restyling hundreds of cues by hand.

SRT to ASS Converter

Why convert SRT to ASS?

What you get

Common workflow

FAQ