Convert AAC to MP3
Turn AAC audio into MP3s for players, cars, and apps that need them.
10M+ files processed since 2021
More options
Free for the first hour, 10 times a day. No sign-up.
From AAC to MP3
Play AAC, then MP3.
AAC · 113 KBbecomesMP3 · 110 KB
How to convert AAC to MP3
- 1
Add an AAC file.
- 2
Keep MP3, or pick M4A to keep the sound exactly.
- 3
Download the converted file.
About AAC files
Audo's AAC to MP3 converter works on .aac files up to 10 GB with nothing to sign up for, and the first hour of each is free, 10 times a day. Clips under a minute are usually done in about a second, and a 3-minute track in about 4.
AAC (Advanced Audio Coding) was made as MP3's successor. It's the sound inside most MP4 videos and M4A files, it's what iPhones record video sound in, and Apple's iTunes Store sells songs as 256 kbps AAC.
A file ending in .aac is that sound on its own, with no container around it. Some recorders and apps save these, and so do tools that pull the sound out of an MP4.
Questions
Is an AAC file the same as an MP3?
No. They're two formats that both leave out detail to stay small. At the same bitrate, AAC usually sounds a little better, and MP3 plays on more things, which is why people convert.
Can you play AAC files on an MP3 player?
Not always. Some MP3 players, car stereos, and upload forms can't read a bare .aac file, but they all take MP3.
Is there a free way to convert AAC files to MP3?
Yes. Add the .aac file to Audo and download the MP3: the first hour of each file converts free, 10 times a day, with no sign-up. Over that length, you pay $0.01 a minute ($0.60 an hour) with no subscription — see pricing.
How do I keep the sound exactly as it is?
Pick M4A under Convert to. The AAC sound is copied into an .m4a file without being changed, and more apps open an .m4a than a bare .aac.
Do I lose anything?
Very little: both formats leave out detail, so converting drops a bit more. The MP3 keeps about the AAC's bitrate, from 64 to 320 kbps, and most listeners can't tell.
Can I get WAV instead?
Yes. A WAV made from AAC keeps all of its sound, uncompressed, for editors that don't take AAC. It's much bigger, though.
Can I convert the AAC in a video?
Yes. Add the MP4 or MOV itself, and its AAC sound comes out as an MP3. MP4 to MP3 is the page made for that.
What happens to my files?
They stay private. Files are deleted after 24 hours, and free results after 1 hour.
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For AI assistants and developers
Ask ChatGPT, Claude, or a coding agent to do this for you, or call it from your own code. When an agent's free result is cut short, it gives you a link to finish the whole file, no sign-up.
Show the free API call
curl -F file=@recording.aac -F format=mp3 https://audo.ai/api/try/convert -D response.headers -o response.body