CaptionStack
Private by design

SRT CONVERTER

SubRip files.
Any format.

Convert .srt captions to SRT, VTT, TTML, and more — or convert anything to .srt. Free, private, and in your browser.

SRTVTTSBVLRCTTMLJSONCSVTXT
1

Choose your caption file

We’ll detect the format automatically. Drop several files to convert them all at once.

Don’t have a file handy?
2

Choose an output format

Select what you need on the other side.

100% privateYour files never leave this device.
8 formatsBuilt for the caption formats you use.
No limitsConvert as often as you need.

About SubRip (.srt) files

SRT files are plain text: a sequence number, a start and end time written as HH:MM:SS,mmm, and one or more lines of caption text. Almost every video player, editing suite, and social platform accepts SRT, which makes it the safest interchange format when you are not sure what a tool supports.

Where .srt is used

  • VLC and most desktop players
  • YouTube, Vimeo, LinkedIn, and Facebook uploads
  • Premiere Pro, DaVinci Resolve, and Final Cut Pro

What a .srt file looks like

1
00:00:01,000 --> 00:00:04,200
Caption files, meet your new converter.

What converts and what doesn’t

SRT carries timing and text only. Styling, positioning, and speaker metadata from richer formats are dropped; cue identifiers are replaced with sequence numbers.

Convert SRT to…

Convert to SRT from…

All caption formats