AAC to M4R Converter serves as the most practical and easy-to-use ringtone converter for iPhone, so it can not only extract audio from aac format, but also convert all the video and audio formats including MPEG, MP3, RM, etc. to m4r iPhone ringtone format. And, this multifunctional AAC to M4R Converter can let you set your wanted segment, making your iPhone ringtones very much unique!

How to operate the smart AAC to M4R Converter?
Tips: You need first free download the AAC to M4R Converter. Then install it.
After the installation, you just need to double
the icon of the AAC to M4R Converter on your computer to let it launched and run. Then
"Add File" button to add aac file which you want to convert into m4r iphone ringtone format.
Tips: You can load only one aac file at one time.

button to listen to the music and choose the segment you want to use as a iPhone ringtone of m4r format.
Tips: You can drag and click the start & end slider (yellow ones) to set your wanted segment, or type the start & end time in the corresponding text box directly to get the exact segment.
pre-listen button as shown below to pre-listen the converted m4r ringtone before the conversion.

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button which appears on the right side of the "Local Output Folder" to specify your output destination.
Tips: If you have connected your iPhone with the computer, you can check the "Export to iPhone". It will let the converted m4r ringtone loaded to your iPhone directly.

The last step: Please
the
button to initiate the conversion process. After it ends, you can enjoy your favorite iPhone ringtone of m4r format immediately!
After our guide, you can try it by yourself again, because the AAC to M4R Converter can convert any other audio and video formats such as mp4, wav, flv etc. to the m4r iPhone ringtone format as well.