SSA to SRT Subtitle Converter

Quickly convert SubStation Alpha subtitles to SubRip Subtitle locally in your browser. Timelines and subtitle content are never uploaded.

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What happens when converting SSA to SRT?

SubStation Alpha content is parsed into a unified millisecond timeline before being exported as SubRip Subtitle. Valid timing and subtitle text are preserved.

SRT output creates numbered subtitle blocks and uses comma-separated millisecond timestamps.

Complex ASS / SSA style tags and positioning are removed while visible text and timing are converted.

Format overview

About SSA and SRT subtitle formats

Learn what each file format is, how it is structured, where it is commonly used, and what to consider during conversion.

Source file format

SSA · SubStation Alpha

SSA, or SubStation Alpha, is a classic advanced subtitle format and the predecessor of ASS. It supports styling, positioning, and effects, with SubStation Alpha v4 being a common version.

File structure: SSA files use sections such as Script Info, V4 Styles, and Events. Subtitle events are normally stored in Dialogue lines, and classic v4 files commonly include a Marked field.
Common uses: SSA is often found in older subtitle-authoring software, legacy subtitle archives, early anime subtitle projects, and players that still support SubStation Alpha.
Conversion notes: SSA and ASS are related but not identical. Text and timing can be preserved when converting to simpler subtitle formats, while complex styles and effects normally cannot.

Target file format

SRT · SubRip Subtitle

SRT, short for SubRip Subtitle, is a simple, open, and highly compatible text subtitle format. It is one of the most common interchange formats used by video players, editors, and online video platforms.

File structure: An SRT file contains sequentially numbered cue blocks. Each block has an index, a start and end timestamp separated by an arrow, and one or more lines of subtitle text. Milliseconds normally use a comma separator.
Common uses: SRT is commonly used for movies, video editing imports and exports, online video uploads, and exchanging subtitle timing and text between applications.
Conversion notes: SRT primarily stores text and timing. It is not designed for complex positioning, typography, or animation, so advanced ASS or SSA styling is normally lost when converting to SRT.