M4A to WAV converter

Convert M4A audio to WAV in your browser, with no upload.

    Drop M4A files here or choose files.

    • Up to 500MB and 60 minutes per file
    • Up to 10 files at a time

    Mono merges left and right into one channel and reduces the file size (WAV drops by half). Good for voice recordings.

    You are unlikely to hear a difference either way. Pick 48kHz if the audio is going back into a video editor.

    Leave blank to start from the beginning. Write 90 or 1:30.

    Leave blank to go to the end. With several files, the same range is applied to each.

    Files never leave this device. Privacy policy

    Result

    Upload a M4A file and click Convert. The WAV file will appear here.

    What to do next

    M4A to MP3 converter

    When you need a small MP3 for sharing or storage.

    Extract audio from video

    Save just the audio from a video file as MP3 or WAV.

    AAC to MP3 converter

    Audio with an .aac extension converts the same way.

    How it works

    Choose a M4A file and click Convert. The tool saves it as WAV. Upload several files and they convert one after another. Save the results one at a time or as a ZIP.

    WAV is written as 16-bit PCM, which opens in any audio editor or DAW. Enter a start and end time to save only that part.

    Things to know

    The browser decodes the audio itself, so if it does not recognize the codec inside the file, the conversion cannot run. The tool tells you why, and trying again in Chrome on a desktop usually works.

    Long files use a lot of memory, so the limit is 60 minutes. If a large file stalls on a phone, try it on a computer.

    Frequently asked questions

    Does it work with iPhone Voice Memos?

    Yes. Voice Memos are saved as M4A (AAC). Share the memo, save it to Files, then upload it here. For voice-only recordings such as calls, mono at 128kbps is plenty.

    Does converting to WAV improve the quality?

    No. If the source is compressed audio such as AAC or Opus, the detail lost in that compression does not come back. What WAV gives you is a file that does not degrade further, so you can edit and re-save it as many times as you like. Expect about 11MB per minute (48kHz stereo).

    Are my files uploaded to a server?

    No. Decoding and converting happen entirely in this browser, and the file never leaves your device. The result disappears when you close the page, so use the save button to download it.

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