Your files stay on your device
M4A to AAC
Turn M4A audio into AAC, right in your browser.
Drop your M4A files here
or click to browse from your device
Supports: M4A
Files that already hold AAC sound copy over unchanged. Anything else needs the extra FFmpeg core, and the page tells you when it is missing.
Paste, drop, or type to begin. Everything stays on this device.