ASS (Advanced SubStation Alpha, .ass extension) is a subtitle format that supports rich styling — custom fonts, colors, positions, rotations, fades, and karaoke effects. Aegisub is the canonical editor.

Will my SRT timing be preserved exactly?

Yes. Start and end times are kept to centisecond precision (ASS's native resolution). You can tweak styles afterwards in Aegisub without retiming.

What default style is used?

A sensible default: Arial 20pt white with black outline, centered at the bottom. Open the file in Aegisub to change any style property.

SRT to ASS Converter

Convert SubRip to Advanced SubStation (Aegisub) in one click.

100% Free Browser-only Instant

Upload a file or paste its contents

Drop a subtitle file here, or click to browse

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All conversion happens in your browser. Your file never leaves your device.

Why convert SRT to ASS?

ASS (Advanced SubStation Alpha) is the format Aegisub and anime fansub workflows use to apply fonts, colors, positioning, and karaoke effects. Start from an SRT transcription, then style in Aegisub.

How to convert in 3 steps

01
Upload your file or paste its content
02
Click Convert — runs entirely in your browser
03
Preview, then download the result

Frequently asked questions

Related subtitle tools

SRT → VTT VTT → SRT SRT → TXT LRC → SRT