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Convert SUB to SRT online

Free SUB to SRT converter: drop a SUB file and download it as SRT in one click. Timings, line breaks and italics are kept, and your file never leaves your browser.

How to use it

1

Drop your SUB file in the box, or paste its text.

2

Check the SRT preview: every line is converted at once.

3

Press Download to save the SRT file.

Need subtitles, not just a fix?

Our AI tools do the hard part: make subtitles from the speech, translate them, or burn eye-catching captions into your video. Free minutes to start, no credit card.

AI subtitle generatorUpload a video and get timed subtitles in 60+ languages in minutes.Make subtitles →Subtitle translatorTranslate SRT and VTT files into 80+ languages, with the timing kept.Translate a file →Animated captionsWord-by-word highlighted captions burned into your video for TikTok, Reels and Shorts.Burn captions →

Questions and answers

What is the difference between SUB and SRT?

SUB (MicroDVD) counts time in video frames instead of seconds, so the frame rate of the video (for example 23.976 or 25) is needed to convert it. SRT (SubRip) is the most widely supported subtitle format: numbered blocks with a start time, an end time and the text. Almost every player, editor and platform reads it.

Is the SUB to SRT converter free?

Yes, free with no limits and no account. The file is converted on your own device and never uploaded.

Will I lose styling or positions?

Times, text and line breaks are always kept. Italic, bold and underline are kept where the new format supports them; colours, fonts and positions of ASS files are only kept when you save as ASS again.

More free subtitle tools

Convert formats

Subtitle converterAny format to any other: SRT, VTT, ASS, SSA, SBV, SUB, TXT, CSV.

Fix the timing

Shift subtitle timingSubtitles too early or too late? Move them all by a few seconds.Change frame rateFix subtitles that drift more and more: 23.976, 25 or 29.97 fps.Sync subtitlesSet the right time of two lines; every line in between follows.

Clean, merge and repair

Merge subtitlesJoin the subtitles of CD1 and CD2 into one file.Split subtitlesCut one file in two at any time, for CD1/CD2 or a trimmed video.Remove hearing-impaired textDelete [sounds], (descriptions), speaker names and song lyrics.Remove formatting tagsStrip italic, colour and position codes that players show as text.Fix encoding (to UTF-8)Broken letters like é or ???? Detect the encoding and save as UTF-8.Fix overlapping subtitlesMake each line end before the next one starts.Bilingual subtitlesTwo languages in one subtitle file, one above the other.Subtitle StudioEdit lines and timing next to your video, then translate them (free account).