MP3 to text
Convert MP3 to text online.
Drop in an MP3 and get an editable transcript with timestamps and speaker labels. Copy it, or download TXT, Markdown or SRT.
Upload
Choose your MP3 file.
Long files are fine: up to 3 hours or 2 GB. The MP3 is decoded in your browser and sent in short sections, so a one-hour file usually finishes in a few minutes.
- MP3, M4A, WAV, MP4, MOV, WebMUp to 2 GB or 3 hours per file. Audio is prepared in your browser where possible.
- The same editor as link transcriptsTimestamps, speaker names, chapters, show notes and every export format.
Drop in an MP3
MP3, M4A, WAV, MP4, MOV or WebM · up to 3 hours
or drag and drop it anywhere hereMP3 transcription
From MP3 to a document you can finish.
A converter that hands back one long block of text isn't much better than the audio. CastTranscript splits the transcript into speaker turns, keeps a timestamp on every line and links each line to the MP3, so you can listen to anything that looks wrong.
Formats you can export
- TXT for notes, documents and pasting into other tools.
- Markdown with speaker names, plus the generated summary and chapters.
- SRT and VTT subtitles timed to real sentence boundaries, for video editors and YouTube.
Tips for a cleaner transcript
- Set the language if you know it; auto-detect works, but a fixed language helps with short clips.
- Use the editor's find and replace for names and jargon the model spelled phonetically.
- Mono recordings at 64 kbps or more transcribe as well as large WAV files, so there is no need to convert first.
Is the MP3 a published podcast episode? You don't need the file: paste the episode link and we fetch it. Other formats are covered on the audio to text page.
Pricing
Try it on a real episode first.
Paste a link and read a free preview without signing up. A free account adds 10 minutes. After that you pay by the hour, with no seat fees.
Enough to check accuracy on your show before you pay.
Precision 60-language engine, custom vocabulary, chapters & show notes.
One-time top-up packs for occasional episodes and uneven workloads.
Questions, answered
MP3 to text questions
How do I convert an MP3 to text?
Upload the MP3, start the transcript, and review it in the editor. When it looks right, copy the text or download it as TXT, Markdown or SRT.
How long can the MP3 be?
Up to 3 hours or 2 GB per file.
Can I convert MP3 to SRT subtitles?
Yes. When sentence timing is returned, you can export SRT or WebVTT files directly from the transcript.
Does it work for MP3s in other languages?
Yes. The language is detected automatically, or you can choose it before you start. Most widely spoken languages are supported.
Is it free?
You can try it without an account. A free account includes 10 minutes, and paid plans start at $9 for 10 hours that never expire.
Private by default
Turn the MP3 into text.
Upload the file and check the transcript against playback.