AAC to MP3 Converter
Convert .aac recordings into MP3 for car stereos, older players and upload forms.
Convert your file
AAC → MP3How it works
- Choose an AAC fileFiles ending in .aac up to 50 MB and 15 minutes long are accepted.
- Pick a bitrateMatch or beat the original bitrate. 192 kbps suits most music.
- Agree, convert and downloadConfirm the upload, follow the progress, then save the MP3.
Supported formats
Files your browser cannot read are converted on our server instead.
About this tool
Files ending in .aac usually come from call recorders, radio and podcast captures, or Android recording apps. AAC sounds good at small sizes, but car stereos, older MP3 players, some editors and many upload forms only take MP3. This converter re-encodes your AAC audio as an MP3 at the quality you choose.
Because both formats are lossy, pick a bitrate at or above the original: 192 kbps is a safe choice for most music and 128 kbps for speech. Browsers cannot create MP3 files, so the conversion runs on our server with FFmpeg after you agree to the upload. Files are private and deleted within 30 minutes.
Questions people ask
What is the difference between AAC and M4A?
Will converting reduce the quality?
Is my recording kept private?
AAC vs MP3
| AAC | MP3 | |
|---|---|---|
| Full name | Advanced Audio Coding (raw ADTS stream) | MPEG-1 Audio Layer III |
| Compression | Lossy | Lossy |
| Typical file size | About 1 MB per minute at 128 kbps | About 1 MB per minute at 128 kbps, 2.4 MB at 320 kbps |
| Best for | Streaming, broadcast and phone recordings | Music, podcasts and sharing |
| Works with | Most phones and modern players; many car stereos and editors prefer MP3 | Practically every phone, computer, car stereo and app |