M4A converter
M4A is the format your voice memos and Apple-ecosystem recordings arrive in, and the format the rest of the world keeps refusing. Converting one here means the recording, often a private conversation or meeting, is processed by WebAssembly in your own browser rather than uploaded to a stranger's server.
What is M4A?
M4A is audio in an MPEG-4 container, almost always AAC-encoded: the format Apple uses for iPhone voice memos, iTunes purchases and most recordings made in the Apple ecosystem. AAC compresses slightly better than MP3 at the same bitrate, and playback support is broad on modern devices. The friction appears at the edges: older car stereos, cheap players, some Windows software and many upload forms still only accept MP3.