MP3 to AAC
Convert MP3 to AAC in your browser. Your file is never uploaded.
This free MP3 to AAC converter runs in your browser. Drop in a MP3 file and download a AAC a moment later, with no upload, no sign-up, and nothing to install. Because the work happens on your own device, your file never leaves it.
What is MP3?
MP3 is the most widely supported audio format. Its lossy compression keeps files small while still sounding good, and it plays on essentially any device.
What is AAC?
AAC is the lossy format used by Apple Music and YouTube. At the same bitrate it generally sounds better than MP3.
Questions
Is the MP3 to AAC converter free?
Yes, it is free with no sign-up and no watermark. There is no cap on how many files you can convert, and nothing to install.
Do my files get uploaded to a server?
No. The conversion runs entirely in your browser using code that loads onto your device, so the file is read, converted, and downloaded locally. It never reaches us or anyone else.
Will the conversion lose quality?
AAC uses lossy compression, so re-encoding can cost a little quality. Near the top of the quality setting the difference is hard to see, and for most uses it is not noticeable.