Audioknife

M4A to WAV Converter

Convert M4A (AAC) audio to WAV for free, right in your browser. No upload, no sign-up, no watermark. Works on phones and computers.

  • No upload
  • Free, no sign-up
  • No watermark
  • Works on phones

How to convert M4A to WAV

  1. Drop your M4A file on the box above, or tap it to choose. You can pick several files at once.
  2. WAV is already selected. Adjust the quality if you like (16-bit works everywhere, 24-bit for editing).
  3. Tap the download button next to each file. Your WAV is saved to your Downloads folder.

Get a standard WAV from an iPhone recording or an Apple Music export so it opens in any editor, DAW, transcription service or sampler.

Other conversions

Frequently asked questions

Will the WAV sound better than the M4A?

No. AAC is lossy, so the WAV sounds the same; it is simply uncompressed so more programs can edit it.

Which WAV settings should I use?

16-bit at the original sample rate works everywhere. Choose 24-bit if you will process the audio further.

Can I convert several files at once?

Yes. Choose or drop as many files as you like. They are converted one after another and each gets its own download button.

Are my files uploaded?

No. The conversion runs inside your browser on your own device. Your audio is never sent to a server, so it works with private and unreleased recordings.

Is it really free?

Yes. No sign-up, no watermark, no daily limit. Very long files (over about an hour) may be too big for a phone's memory.