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MP3 to SRT

MP3 to SRT, audio subtitles locally

Turn an MP3 audio file into an SRT subtitle file on your own computer. SnailText transcribes the speech and writes the SRT with phrase-level timing - no upload and no per-minute billing.

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Generate SRT locally, nothing uploaded

No account · Nothing uploaded

Convert MP3 to an SRT subtitle file

You might want SRT from an MP3 to pair subtitles with a podcast clip, a recorded talk shared as audio, or a voice memo you will upload alongside a video. SnailText transcribes the MP3 and writes a phrase-level SRT, all on your machine.

You get a standard .srt file ready to attach to a video or use in any subtitle editor. MP3 works immediately with no extra download.

How to convert MP3 to SRT

  1. Open the Transcribe files screen in SnailText.
  2. Add your MP3 audio file (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

MP3 to SRT free, without uploading the file

Online MP3-to-SRT converters upload your audio to a server. SnailText does it locally: the file stays on your machine, there is no length limit beyond your memory, and the free tier has no watermark. MP3 works immediately with no extra codec download.

If you only want the plain transcript of an MP3 rather than a subtitle file, the MP3 to text page covers that. This page is specifically for generating an SRT.

MP3 to SRT FAQ

How do I convert an MP3 to an SRT file for free?
Install SnailText, open Transcribe files, add your MP3, choose SRT as the output, and run it. It generates the SRT locally with the Whisper model, no account and no per-minute charge. MP3 works immediately with no extra download.
Why would I want SRT from an MP3?
SRT files are used when you want timed subtitles to pair with a video. If you have a podcast or audio talk you are uploading to YouTube or Vimeo, pairing it with an SRT adds subtitles. SnailText generates the SRT from the MP3 locally.
What is the difference between MP3 to SRT and MP3 to text?
MP3 to SRT produces a timed subtitle file (.srt) with start and end times per phrase. MP3 to text produces a plain transcript with no timestamps. SnailText does both, you just pick the output before the run.
Will the subtitles be burned into the video you pair the MP3 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

Audio to SRT →

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.

Same format, other output

MP3 to VTT →

Related formats

Subtitle hubs

All transcription formats →

Generate an SRT from your MP3

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

Download for Mac Or for Windows →