M4A is what iPhone Voice Memos, many Android recorders and Apple Music downloads save. Some older players, car stereos and upload forms only take MP3. Drop the M4A here and you get an MP3 back in seconds, converted on your own device.
Your file never leaves your device. Nothing is uploaded.
Drop an audio or video file here
Drop an .m4a up to 500MB. It's converted on your device.
Conversion runs on FFmpeg, compiled to WebAssembly, inside this browser tab. Licences and source
Both are lossy, so converting one to the other loses a little each time. Pick a bitrate at or above the M4A's own (Voice Memos are usually 64 to 128 kbps, music 256 kbps) and the difference is very hard to hear.
Nowhere. The converter runs inside your browser tab, so the file is read and converted on your own device and saved straight back to it. It is never uploaded to Wave or anyone else, and we never see its name or contents.
Yes. A two-hour M4A is usually under 120MB, well inside the 500MB limit, and converts in a minute or two on a recent computer.
Usually not: the free Wave AI transcription tool reads M4A directly. Convert first only if the transcriber says it can't decode the file, which happens with some recorder apps' M4A variants.
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