SRT to VTT Subtitle Converter

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

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What happens when converting SRT to VTT?

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

WebVTT output uses dot-separated millisecond timestamps and includes the WEBVTT file header.

Empty subtitles are removed and valid cues are sorted by start and end time.

Format overview

About SRT and VTT 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

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.

Target file format

VTT · WebVTT

VTT, or WebVTT, is a timed-text format designed for web video. HTML5 video elements can use it through track elements for subtitles, captions, chapters, and other synchronized text.

File structure: A WebVTT file normally begins with a WEBVTT header and uses a dot as the millisecond separator. It may also contain cue identifiers, positioning settings, comments, and metadata.
Common uses: VTT is commonly used by web players, online courses, recorded streams, accessible closed captions, and videos that need subtitles displayed directly by modern browsers.
Conversion notes: VTT supports richer web-caption features than SRT. Cue positioning, voice tags, chapters, and some metadata may not survive conversion to simpler formats.