How to use M4A to MP3
- Choose a M4A file.
- Click Convert to MP3 and wait for processing.
- Download your new MP3 file.
Private M4A to MP3 conversion
M4A (AAC) is common on Apple devices; MP3 plays on virtually every device and app ever made.
Conversion is powered by FFmpeg compiled to WebAssembly and runs locally. The engine downloads once on first use, then your media is processed on your own device — nothing is uploaded.
- Is there a file size limit?
- The only limit is your device's memory, since processing happens in your browser rather than on a server.
- Are my files uploaded?
- No. Everything is processed locally in your browser, so your files never leave your device.