AAC to M4R Converter

Select files for conversion or just drag and drop them to the upload area

How to convert AAC files to M4R online?

Step 1.

Upload AAC-file

Click "Choose File" button to select a aac file on your computer. AAC file size can be up to 50 Mb.
Step 2.

Convert AAC to M4R

Click "Convert" button to start conversion.
Step 3.

Download your M4R

Let the file convert and you can download your M4R file right afterwards.

Information about AAC and M4R file formats

Name AAC M4R
Full name AAC - Advanced Audio Coding M4R - MPEG 4 Ringtones Audio
File extension .aac .m4r
MIME type audio/aac audio/aac
Developed by Bell Labs, Fraunhofer Institute etc. Apple Inc.
Type of format Audio compression format
Description Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression. Designed to be the successor of the MP3 format, AAC generally achieves better sound quality than MP3 at similar bit rates. AAC has been standardized by ISO and IEC, as part of the MPEG-2 and MPEG-4 specifications.
Technical details AAC supports inclusion of 48 full-bandwidth audio channels in one stream plus 16 low frequency effects channels, up to 16 "coupling" or dialog channels, and up to 16 data streams. The quality for stereo is satisfactory to modest requirements at 96 kbit/s in joint stereo mode; however, hi-fi transparency demands data rates of at least 128 kbit/s.
Associated programs foobar2000, AIMP, DirectShow, QuickTime, VLC media player. Apple QuickTime Player, Apple iTunes
Wiki https://en.wikipedia.org/wiki/Advanced_Audio_Coding http://en.wikipedia.org/wiki/MPEG-4_Part_14