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M4A to WAV

Convert M4A files, such as iPhone voice memos, to WAV. Free, with no upload.

Files stay on your device

Drop files to convert

See their format, then choose an output.

MP3, M4A, WAV, FLAC, and other audio, or a video with sound. You can also drag in a whole folder.

How to convert M4A to WAV

Open an M4A, or many at once, and save each one as an uncompressed WAV for Audacity, a DAW, or a transcription service. iPhone Voice Memos and GarageBand exports are M4A files. The M4A to WAV converter runs in your browser, so the recordings stay on your device.

  1. Step 1

    Choose your M4A files
    Pick one or many, or drop them into the converter above.

  2. Step 2

    Keep WAV
    WAV is selected; choose another audio format if you need one.

  3. Step 3

    Download the WAV
    Save each file when it's converted.

What to expect

Supported inputs
M4A files, including iPhone Voice Memos, and any other audio or video file.
What happens
The AAC sound is decoded and written as uncompressed PCM in a WAV file. WAV is selected first; you can choose another audio format.
Limits
A WAV is much bigger than the M4A, roughly 10 MB per minute of stereo sound. Copy-protected M4P songs can't be converted.

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

Some editors, phone systems, and transcription services take only WAV. It also opens anywhere without a decoder.

No more than the M4A already did. The sound is decoded into WAV without further loss.

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