M4R to AAC Converter

Convert M4R (MPEG-4 Part 14) to AAC (Advanced Audio Coding) online and completely free.

How to convert M4R to AAC online

  • 1To get started, upload one or more .m4r files to the converter area.
  • 2Then use the audio conversion settings and click the "Convert" button.
  • 3When the conversion is complete, you can download .aac files.
M4R to AAC Converter

M4R
M4R (MPEG-4 Part 14)

M4R is the audio format used by Apple in the iTunes application. M4R files are usually ringtones that you can install on your iPhone. At its core, M4R is a regular M4A (MPEG-4) audio file, and the .m4r extension is used to distinguish ringtones from other melodies. Often the maximum length of an M4K ringtone is limited to 40 seconds. If you downloaded such a file from the music store on your iPhone, you will need to convert it to use on other devices.
File type: Audio
File extension: .m4r
Developed by: Apple Inc.
Initial release: 2001

AAC
AAC (Advanced Audio Coding)

AAC is an audio coding format that uses lossy compression. As well as other lossy formats, AAC cuts off human-inaudible frequencies to reduce file size. It was developed by Apple as an alternative to other popular lossy formats and is used for streaming and storing music in iTunes. This codec is part of the MPEG-4 container. AAC demonstrates high efficiency at variable and constant bitrate.
File type: Audio
File extension: .aac
Developed by: Bell, Fraunhofer, Dolby, Sony, Nokia, LG Electronics, NEC, NTT Docomo, Panasonic
Initial release: 1997

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