MP3 to text
Transcribe an MP3, such as a podcast, interview, or lecture, to text you can copy or download. Free, with no upload.
Drop an MP3 to transcribe it
The speech is recognized on your device, so nothing is uploaded and there's no limit on length.
MP3, M4A, WAV, FLAC, and other audio, or a video with sound.
How to convert MP3 to text
Open the MP3 and Mastershot writes down what's said, in paragraphs, with the time each one starts if you want it. Copy the transcript, or save it as a TXT file or as SRT or VTT subtitles. The recording stays on your device, and there's no limit on length.
Step 1
Choose your MP3Pick a podcast, interview, or lecture.Step 2
Transcribe itThe speech is written down on your device.Step 3
Copy or downloadSave the transcript as TXT, SRT, or VTT.
What to expect
- Supported inputs
- MP3 files, and any other recording or video this browser can read: M4A, WAV, OGG, FLAC, MP4, and more.
- What happens
- Whisper, a speech recognition model, listens on your device and writes down each word with its time.
- Limits
- The first time, the browser downloads the 77 MB speech model and keeps it. Transcribing takes about a sixth of the recording's length, so an hour-long podcast takes about 10 minutes. Song lyrics come out poorly over music.
Private by design
Your video stays on your device
Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.
- No upload
- No signup
- No watermark
Questions
Yes, of any length. Turn on Times to mark where each paragraph starts, which helps when writing show notes.
Yes, with no sign-up and no minutes to buy. It runs in your browser, so the recording isn't uploaded.
Yes, 99 of them. It detects the language, or you can choose it.