SRT to ASS Converter
Convert a plain .srt file into a valid Advanced SubStation Alpha (.ass) file with a clean default style, ready to open in editors like Aegisub or players that support ASS.
Drag & drop your file here
or
Accepted formats: .srt · Max size 20 MB
What is an SRT file?
SRT subtitles carry no styling information at all — just timing and text. Converting to ASS wraps that same dialogue in a proper [Script Info], [V4+ Styles] and [Events] structure with a sensible default style, giving you a starting point for further customization. This is often the first step before doing any karaoke-style or heavily-styled subtitle work: start from plain, correctly-timed dialogue, then build the visual styling on top of it in an editor rather than from scratch.
How to convert SRT to ASS
- 1Upload your .srt file by dragging it in or clicking "Choose file".
- 2The tool generates a valid ASS header with a clean default style.
- 3Each SRT entry becomes a Dialogue line with converted timestamps.
- 4Preview the result, then copy it or download the .ass file.
Why use our SRT to ASS converter?
- Start customizing subtitle styling in an editor like Aegisub.
- Meet a platform or player's requirement for the ASS format.
- Add a consistent base style before applying advanced formatting.
- Prepare simple subtitles for a fansubbing or karaoke-style workflow.
Privacy
Your SRT file is parsed and converted locally in your browser using JavaScript — it is never uploaded to a server to perform this conversion. Nothing you convert here is stored, logged, or seen by anyone else.
FAQ
- What style does the generated ASS file use?
- A clean, readable default style — white Arial text at a sensible size with a subtle outline — that you can further customize in a subtitle editor.
- Will the timestamps be accurate?
- Yes, timestamps are converted from SRT's millisecond format to ASS's centisecond format precisely.
- Can I edit the styling afterwards?
- Yes, the output is a standard ASS file you can open in Aegisub or any compatible editor to adjust styles, positioning or effects.
- Is this conversion private?
- Yes, it runs entirely in your browser and your SRT file is never uploaded.
- Can I open the result in Aegisub right away?
- Yes, the generated file is a complete, valid .ass document with proper Script Info and Styles sections, so it opens directly in Aegisub or any other ASS-compatible editor without needing repair.