Free Online M4R to AMR Converter
M4R
to
AMR
M4R
MPEG 4 Ringtones Audio
M4R - is a digital multimedia container format used to store audio in mono channel mode. This format is suitable for store ringtones and it is widely used by Apple iPhone for its ringtones. Needless to say that M4R and M4A formats shares many similar features.
AMR
Adaptive Multi Rate
This format was originally intended for voice compression and is able to change the bit rates of encoded audio data. AMR is actively used for encoding and decoding voice while its being transmitted over network channels. The format allows one to consider network capacity and adapt it to channel loads. Due to this, the voice quality is practically undiminished.
How To Convert M4R to AMR

Step 1: Upload Files
Click the upload button or drag and drop your M4R files into the upload area.

Step 2: Convert File
Click "Convert" and wait for conversion done

Step 3: Download
Download the converted AMR file