1
Choose Your Audio File
Choose the .aac file or drop it on the page.
AAC to MP3 Converter
Convert .aac audio files to MP3 in your browser, so they play on every device. The file is never uploaded.
Files stay on your device
Drop your AAC here, or choose a file
Converts AAC audio files to MP3 at 128 to 320 kbps. It stays on your device.
Choose a fileYour browser converts the file. Nothing is sent to a server.
- No signup, no watermark
- No upload size limit
- About 2 sec for a 47 sec clip
- Works offline once loaded
How to Convert AAC to MP3
2
Pick Quality and Trim
Pick an MP3 bitrate at least as high as the AAC file's; 192 kbps suits most files.
3
Convert and Download
Press Convert to MP3, preview it, and download.
What Is an AAC File?
AAC (Advanced Audio Coding) is the audio codec behind most MP4 videos, iTunes songs and YouTube sound. A file ending in .aac holds the raw AAC stream without an MP4 wrapper.
Call recorders, voice recorder apps, radio and stream rippers and some screen recorders save .aac files. They are compact, but some players and upload forms do not accept them.
| AAC | MP3 | |
|---|---|---|
| Released | 1997, as MP3's successor | 1993 |
| Quality at the same bitrate | Better, especially below 128 kbps | Good from 128 kbps up |
| File endings | .aac, or inside .m4a and .mp4 | .mp3 |
| Plays on | Most phones and browsers | Every device, including older players |
Why Convert AAC to MP3
Upload Where AAC Is Refused
Many forms, portals and older apps list MP3 as the only audio format.
Older Players
Basic MP3 players, some car stereos and some Windows apps do not play raw .aac files.
One Library Format
Keep a music or recording library in a single format that everything reads.
Choosing the MP3 Bitrate for AAC
AAC sounds better than MP3 at the same bitrate, so match or slightly exceed it. A 128 kbps AAC sounds best as a 160 to 192 kbps MP3.
Going far above the original, such as 320 kbps from a 96 kbps AAC, makes the file bigger without making it sound better.
AAC to MP3: Frequently Asked Questions
Is AAC better than MP3?
At the same bitrate, yes, slightly. MP3 is converted to for compatibility, not quality.
What MP3 bitrate should I pick for an AAC file?
The same as the AAC bitrate or one step higher. 192 kbps suits most music files; 128 kbps suits speech.
Is my AAC file uploaded to a server?
No. Your browser reads the AAC file and writes the MP3 on your own device. Nothing is sent to MP4toMP3.io or anyone else, and the page keeps working with Wi-Fi off once it has loaded.
Can I convert M4A files here too?
Yes. M4A files usually contain AAC. The M4A to MP3 page has tips for iPhone voice memos.
Does it work on Android?
Yes. Open this page in Chrome, choose the AAC file, convert it and find the MP3 in Downloads.
Ready to Convert AAC to MP3?
Choose a file at the top. It is free, private and done in your browser in a few seconds.
Convert now