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Audio to SRT

Audio to SRT, MP3 and WAV to subtitles

Turn an audio file into an SRT subtitle file on your own computer. SnailText transcribes MP3, WAV, M4A, and more into timed subtitles locally, no upload and no per-minute meter.

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Generate SRT and VTT locally, nothing uploaded

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Convert audio to an SRT subtitle file

Sometimes the audio is what you have, a podcast, a recorded talk, an interview, and you want subtitles to pair with a video or to publish alongside it. SnailText transcribes the audio and writes an SRT with phrase-level timing, all locally.

It works with MP3, WAV, M4A, AAC, OGG, Opus, and FLAC out of the box, so most recordings just drop in. The result is a standard .srt file, not burned-in captions.

How to convert audio to SRT

  1. Open the Transcribe files screen in SnailText.
  2. Add your audio file (MP3, WAV, M4A, and more) or a folder of them.
  3. Choose SRT as the output before you run it.
  4. Run it. The .srt file is saved next to your audio.

Try it on your own files

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Generate SRT and VTT locally, nothing uploaded

MP3 to SRT and WAV to SRT, free and local

Whether it is MP3 to SRT, WAV to SRT, or M4A to SRT, SnailText handles it the same way: locally, with no upload and no per-minute meter. Online audio-to-SRT tools send your recording to a server and cap the free tier, SnailText keeps the audio on your machine.

Common audio formats work the moment you install, with no extra download. If you only want a plain transcript instead of subtitles, the audio to text page covers that.

Audio to SRT FAQ

How do I convert MP3 to SRT?
Open SnailText, go to Transcribe files, add your MP3, choose SRT as the output, and run it. SnailText transcribes the MP3 locally and writes an SRT subtitle file with phrase-level timing. MP3 works immediately with no extra download, and nothing is uploaded.
Can I convert WAV or M4A to SRT too?
Yes. SnailText generates an SRT from MP3, WAV, M4A, AAC, OGG, Opus, or FLAC, all locally. Just add the file, pick SRT, and run it. The common audio formats work with no extra codec download.
Are the audio subtitles word-level or phrase-level?
Phrase-level. SnailText writes one subtitle cue per spoken phrase, with a start and end time, which is the standard readable format for SRT. It does not do word-by-word or karaoke-style captions.
Does the audio to srt burn the subtitles into the video?
SnailText writes a separate SRT or VTT file and does not hardcode captions into the video. That keeps the subtitles editable and lets you attach them in any player or editor. If you want them burned in, overlay the SRT in a video editor afterward.
Are the subtitles word-level or phrase-level?
The subtitles are phrase-level: SnailText writes one cue per spoken phrase with a start and end time, the standard readable format for an SRT or VTT file. It does not produce word-by-word or animated karaoke-style captions.
How much does it cost?
The free tier generates subtitles locally with the compact Whisper models, no account and no per-minute meter. Pro adds the larger, more accurate models and an optional on-device AI cleanup pass, $7.49/mo or $89/yr for up to 3 devices.

More ways to transcribe and caption

Generate an SRT from your audio

Free local subtitle generation, no account needed. SRT and VTT files on Mac and Windows.

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