AAC converter
AAC converts to MP3 in your browser using WebAssembly, so the audio never leaves your device. Unlimited and free.
What is AAC?
AAC is the lossy audio codec that succeeded MP3, used by YouTube, the iTunes Store, and most streaming services because it sounds better at the same bitrate. It usually arrives in an .m4a or .aac file. Converting to MP3 trades a little efficiency for the format that plays on literally everything.