Convert M4A to WAV
Turning an Apple voice memo or an AAC track into plain samples an editor can work with.
Audio only · up to 10 files · 100 MB each — those numbers protect your memory, not our server
Getting the converter ready — this happens once, then your browser keeps it.
The converter could not start.
The engine files are missing from — copy ffmpeg-core.js and ffmpeg-core.wasm there.
Almost always a mismatched build: the worker is an ES module, so the core has to be the esm one too. Copy ffmpeg-core.js and .wasm from @ffmpeg/core/dist/esm/, not dist/umd/.
not in this build of the converter, so it is not offered.
What you lose
Nothing further, and nothing is regained either. The AAC inside the M4A has already discarded what it was going to discard; unpacking it into plain samples changes none of that.
What you do not gain
No quality. The file grows several times over and contains exactly the audio the M4A already had. What it gains is a format that edits cleanly without another round of compression.
What it does to the size
Approximate, for stereo audio at the settings this tool uses by default. The real figure moves with the material — silence and speech compress far better than a full mix.
When this is the right conversion
Editing a voice memo, or feeding software that will not open M4A. Very common for transcription and podcast work.
Other conversions
This tool is free because dbelo is a library of sound effects, and we would rather you found us this way than not at all.
Browse the sound library