Convert M4A to WAV
Turn voice memos and other M4A files into WAVs that any editor opens.
10M+ files processed since 2021
More options
Free for the first hour, 10 times a day. No sign-up.
From M4A to WAV
Play M4A, then WAV.
M4A · 283 KBbecomesWAV · 887 KB
16-bit at the recording's own 48,000 Hz
How to convert M4A to WAV
- 1
Add an M4A, such as a voice memo.
- 2
Keep WAV, or set mono under More options.
- 3
Download the WAV.
AAC or Apple Lossless
Audo's M4A to WAV converter takes voice memos, GarageBand exports, and any other M4A up to 10 GB without an account, and the first hour of each converts free, 10 times a day, with no sign-up. Memos under a minute usually take about a second, and a 3-minute one about 4.
An M4A is Apple's MP4 file with only sound in it. Most hold AAC, which keeps files small by leaving out detail you're unlikely to hear; some hold Apple Lossless, which keeps all of it. Songs bought on iTunes end in .m4a too.
Editing apps like WAV because every sample is right there, ready to cut and mix, and saving it again never costs quality. Convert to WAV once, do your editing, and turn the finished mix into an MP3 or M4A only at the end.
Questions
Can I convert an M4A file to WAV online for free?
Yes. Add the M4A to Audo and download the WAV, with no sign-up: the first hour of every file is free, 10 times a day. Longer voice memos cost $0.01 a minute ($0.60 an hour), with no subscription — see pricing.
How do I convert M4A to WAV on a Mac or PC?
The same way on both, in the browser: add the M4A, then download the WAV. There's no app to install.
Does converting M4A to WAV lose quality?
No. The WAV holds everything in the M4A, sample for sample, and takes nothing more away. It can't put back what AAC left out, so it sounds exactly like the M4A, not better.
What if the M4A is Apple Lossless?
Then the WAV is an exact copy of the recording, and a 24-bit file stays 24-bit. Voice memos are Apple Lossless when Audio Quality is set to Lossless in the Voice Memos settings.
How do I convert an M4A to WAV on my iPhone?
In Voice Memos, tap the memo, tap More, and choose Save to Files. Then open this page in Safari, add the memo from Files, and download the WAV.
Why is the WAV so much bigger?
AAC packs sound into a small file; a WAV stores every sample. A minute of stereo at 44,100 Hz comes to about 10 MB as a WAV, and mono to about 5 MB, where the M4A is often a tenth of that.
Which apps need WAV instead of M4A?
Samplers, older editors, phone systems, some transcription and voice tools, and many upload forms take WAV but not M4A. A WAV opens almost everywhere, on Windows, Mac, and Linux alike.
What happens to my files?
They stay private. Files are deleted after 24 hours, and free results after 1 hour.
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- Change pitchMove the key up or down.
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For AI assistants and developers
Ask ChatGPT, Claude, or a coding agent to do this for you, or call it from your own code. When an agent's free result is cut short, it gives you a link to finish the whole file, no sign-up.
Show the free API call
curl -F file=@interview.m4a -F format=wav https://audo.ai/api/try/convert -D response.headers -o response.body