Convert M4A to WAV, free.
Drop an M4A — an iPhone voice memo, an iTunes track, any AAC audio — and get back an uncompressed WAV that audio editors and DAWs prefer. It converts on your device, so the file never leaves it.
How to convert M4A to WAV
- Drop your M4A in. Choose or drag an .m4a file — it loads in your browser and is never uploaded.
- Convert. Click Convert; the AAC audio inside the M4A is decoded and written to an uncompressed 16-bit WAV on your device.
- Download. The WAV saves straight to your device, ready to drop into an editor.
Why convert M4A to WAV
M4A is a container that almost always holds AAC — a compressed, lossy format Apple uses for Voice Memos, GarageBand exports and iTunes purchases. It is efficient and sounds good, but it is not what editing software wants to chew on. Audio editors, DAWs and samplers expect uncompressed PCM, and WAV is the format they trust to give them every sample to work with.
Converting an M4A to WAV does not make it sound better — the detail AAC discarded is gone. What it gives you is a stable working copy that will not lose any more quality as you cut, layer and re-export. Keep the M4A as the small file you share, and edit from the WAV.
Before converting for editing
The WAV inherits whatever quality the M4A already had — it is a clean container, not a repair tool, so start from the best M4A you have. For long recordings, expect the WAV to be several times larger, since uncompressed audio runs to roughly ten megabytes per stereo minute.
If your browser cannot decode a particular M4A, it usually means the file is protected (DRM) or uses an uncommon profile rather than normal AAC. Export an unprotected copy from the original app first. TrackMix only works with files your browser can read locally, which keeps the conversion private and avoids any server upload.
Frequently asked questions (5)
Is the M4A to WAV converter free?
Yes — completely free, with no sign-up, no watermarks, and nothing uploaded.
Do my files get uploaded?
No. Conversion runs entirely in your browser, so your audio never leaves your device.
Why convert M4A to WAV?
M4A holds compressed AAC audio, which most audio editors and DAWs would rather not work with directly. Converting to uncompressed WAV gives you a clean, editable file that will not be re-compressed every time you save.
Does converting M4A to WAV improve the quality?
No. M4A is lossy, so converting to WAV cannot recover detail that was already discarded — it only prevents further loss. The WAV sounds the same as the M4A, just larger.
Why is the WAV so much bigger than the M4A?
WAV stores every sample uncompressed while M4A is compressed to a fraction of the size, so a short clip can grow from a couple of megabytes to tens of megabytes once converted.