AAC to M4A
Convert AAC to M4A in your browser. Your file is never uploaded.
This free AAC to M4A converter runs in your browser. Drop in a AAC file and download a M4A 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 AAC?
AAC is the lossy format used by Apple Music and YouTube. At the same bitrate it generally sounds better than MP3.
What is M4A?
M4A is an MPEG-4 audio file, usually holding AAC. It is Apple's default for music and voice memos.
Questions
Is the AAC to M4A 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?
M4A 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.