AAC to MP3 converter
Turn .aac audio files into MP3s that every player accepts.
or drop them here, or paste them
Nothing is uploaded.
About AAC to MP3
Some recorders, radio apps and dashcams save sound as plain .aac files, which many players and websites refuse. MP3 is accepted almost everywhere.
The AAC sound is decoded by your browser and encoded to MP3 on your device. Nothing is uploaded.
An .aac file holds the same kind of sound as an .m4a file, just without the wrapper that stores titles and cover art, which is why some players don't recognise it. Your browser decodes the sound and the MP3 is encoded straight after, all on your device.
Choose 128 kbps for speech and radio recordings, 192 kbps for most music, or 320 kbps for the best MP3 quality. Because AAC is already compressed, converting loses a little detail; at 192 kbps or more you're unlikely to hear it.
A batch of recordings converts in one go and downloads as a single ZIP. Once the page has loaded, it keeps working without an internet connection.
Questions and answers
Both usually contain AAC sound. An .aac file is the bare stream, while .m4a wraps it in a container. Both convert here.
A small one, as with any change between compressed formats. Use 192 kbps or more to keep it inaudible.
Yes. Once this page has loaded, you can convert without an internet connection.