Convert M4A to WAV
Upload an M4A file and convert it to WAV — all in your browser.
Upload an M4A file and convert it to WAV — all in your browser.
The AAC audio in your M4A is decoded to plain PCM and written as a 16-bit WAV. Nothing further is lost; the WAV holds exactly what the decoder produced, in the most universally accepted audio format there is.
Expect a much larger file, since WAV stores samples uncompressed.
iPhone Voice Memos records M4A, and a surprising number of tools downstream want WAV: DAWs, transcription services, court and compliance systems, broadcast editors. This converter is the bridge, and because it runs locally, sensitive recordings stay on your machine.
For long-term storage rather than immediate editing, M4A to FLAC gives you the same safety at half the size.
No additional loss occurs. Decoding unpacks the existing audio; it does not re-compress it.
Uncompressed PCM is trivial to parse and immune to decoder differences, so speech engines standardize on it for predictable input.
Yes. The conversion runs in your browser only. No upload, no server, no retained copies.