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WAV to text

Transcribe a WAV recording from a recorder, microphone, or Audacity to text you can copy or download. Free, with no upload.

Files stay on your device

Drop a WAV 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 WAV to text

Open the WAV and Mastershot writes down what's said, in paragraphs, with times if you want them. Copy the transcript, or save it as a TXT file or as SRT or VTT subtitles. An hour of WAV can be over half a gigabyte, and it never has to be uploaded: it's transcribed on your device.

  1. Step 1

    Choose your WAV
    Pick a file or drop it into the transcriber above.

  2. Step 2

    Transcribe it
    The speech is written down on your device.

  3. Step 3

    Copy or download
    Save the transcript as TXT, SRT, or VTT.

What to expect

Supported inputs
WAV files, and any other recording or video this browser can read: MP3, M4A, FLAC, AIFF, and more.
What happens
Whisper, a speech recognition model, listens to the WAV 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 a 30-minute interview takes about 5 minutes.

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. Nothing is uploaded, so the file's size doesn't matter, only its length.

No. Mono or stereo, at any common rate and bit depth, works the same: the speech model hears it at 16 kHz either way.

Yes, with no sign-up and no minutes to buy.

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