Your files stay on your device
MP3 to AAC
Turn MP3 audio into AAC, right in your browser.
Drop your MP3 files here
or click to browse from your device
Supports: MP3
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.