How to convert M4A to AAC
- Add your .M4A file - drop it in the box above or click to browse.
- Convert it to .AAC in a few seconds.
- Download your new .AAC file.
What to expect
- When the
.m4acontains AAC (the common case), a stream-copy conversion is lossless; re-encoding with a GUI tool adds a small additional quality penalty. - If the
.m4aholds ALAC (Apple Lossless), converting to.aacis always lossy - there is no way to preserve the lossless quality in a raw AAC file. - Raw
.aacfiles carry no metadata, cover art, or chapter markers;.m4apreserves all of those.
Frequently asked questions
Does converting M4A to AAC lose quality?
Not if the M4A already contains AAC and you use a stream-copy tool like ffmpeg with
-c copy - the audio bytes are moved unchanged. Re-encoding with any GUI tool causes a small additional loss.Can I just rename .m4a to .aac?
No.
.m4a is an MP4 container; .aac is a raw ADTS bitstream. Renaming does not change the file structure and most players that check the actual format will reject it.What is the difference between .m4a and .aac?
Both can carry AAC audio, but
.m4a wraps it in an MP4 container with metadata and cover art support, while .aac is a bare bitstream with no tags or artwork.Why do most converters finish so fast?
When the M4A already contains AAC, a stream-copy tool only strips the container with no decoding or encoding, so it completes in seconds regardless of file length.
Programs that convert M4A: Helium Music Manager · Adobe Soundbooth · Agree MP3 to Ringtone Converter · Aimersoft DRM Media Converter for Windows · Any Audio Converter · Apple iTunes for Windows · fre:ac · Free Mp3 Wma Converter
