Convert M4A to WAV
Convert M4A files to WAV entirely in your browser — no upload, no account, no watermark.
Your file never leaves your device — conversion runs entirely in this browser tab.
To convert M4A to WAV, open the WAV converter and drop your M4A file in. The conversion runs entirely inside your browser using WebAssembly, so the file is never uploaded. Standard preparation for editing audio recorded on an iPhone or in Voice Memos.
What to expect from this conversion
Standard preparation for editing audio recorded on an iPhone or in Voice Memos. The M4A stays lossy underneath, but WAV is what most editors and transcription services want to ingest.
AAC audio in an MP4 container. Apple’s standard audio format and the audio you get from most video files.
Lossy · audio
Uncompressed PCM audio. No quality loss, but roughly ten times the size of an MP3.
Lossless · audio
How to do it
- Open the WAV converter
Go to the WAV converter and drop your M4A file onto it, or click to browse.
- Convert
Press Convert. FFmpeg runs in your browser and shows real progress as it works.
- Download
Download the finished WAV file. It is created in your browser and never sent anywhere.
Common questions
How do I convert M4A to WAV?
Open the WAV converter, drop your M4A file onto it and press Convert. Everything runs in your browser — the file is not uploaded. Desktop browsers handle files up to about 200MB; mobile browsers about 40MB.
Does converting M4A to WAV lose quality?
Not on the encoding side. WAV does not discard data when written, so nothing further is lost — though anything the M4A source already discarded stays gone.
Is it free to convert M4A to WAV?
Yes, with no account, no watermark and no daily limit. The processing happens on your device rather than on a server, so there are no per-conversion costs to pass on.
Are my files uploaded when converting M4A to WAV?
No. FFmpeg runs as WebAssembly inside your browser tab. The file is read from your disk, processed in memory and written back out — it never reaches a server.