Online AMR to M4R, you can put the AMR to M4R format on your computer, tablet or mobile phone without downloading any software!
Step 1
Upload AMR file
Select files from your computer, Google Drive, Dropbox, URL or by dragging them on the page.
Step 2
Select 'M4R'
Select output M4R or any other format as the conversion result (click the Convert button)
Step 3
Download your AMR file
After the conversion you can download your M4R file and upload it to Google Drive, Dropbox.
amr : Adaptive Multi-Rate Codec File
AMR files are compressed audio files which are often used by cell phones. This files can contain voice recordings or voicebox messages for example. The format was developed by Ericsson.
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.