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Audio to SRT

Audio to SRT, any recording into subtitles

Turn any audio recording into an SRT subtitle file on your own computer, with no upload and no per-minute billing. If you know your format, there is a dedicated guide for it - links below.

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Generate SRT locally, nothing uploaded

No account · Nothing uploaded

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

Download for Mac

Generate SRT locally, nothing uploaded

Which format are you starting from?

Every common audio format works the moment you install, with no extra codec download, and the process is identical for all of them. If you want the specifics for the file you actually have, each format has its own page: MP3 to SRT, WAV to SRT, M4A to SRT, AAC to SRT, FLAC to SRT, OGG to SRT, Opus to SRT, WMA to SRT and AIFF to SRT.

Online audio-to-SRT tools send your recording to a server and cap the free tier; SnailText keeps the audio on your machine. If you want a plain transcript with no timestamps instead of subtitles, the audio to text page covers that, and if what you actually have is a video rather than a recording, see video to SRT.

Audio to SRT FAQ

Which audio formats can become an SRT?
MP3, WAV, M4A, AAC, OGG, Opus, FLAC, WMA and AIFF all work the moment you install, with no extra codec download, and the steps are the same for each. Each format also has its own page with the specifics - MP3, WAV, M4A and the rest are linked above.
Do I need to convert my audio first?
No. Add the file as it is - there is no need to re-encode to WAV or anything else beforehand. SnailText reads the common formats directly, so converting first only costs you time and a generation of audio quality.
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.
Will the subtitles be burned into the video you pair them with, or is the SRT a separate file?
No. SnailText writes a separate SRT 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 file in a video editor afterward.

More ways to transcribe and caption

All formats

Subtitle generator →

Turn any audio or video file into an SRT or VTT subtitle file. Automatic subtitles generated from the speech itself, on your own computer, with no upload, no per-minute billing and no watermark.

Same format, other output

Audio to VTT →

Guides by format

Subtitle hubs

All transcription formats →

Generate an SRT from your audio

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

Download for Mac Or for Windows →