Online convert audio into M4R format

Upload files to convert into M4R format with .m4r extension

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    M4R

    An M4R file is a iPhone ringtone audio file. M4R files are automatically transferred to an iPhone when the phone is synced with the computer using Apple iTunes. Our free tool help you to convert audio file to M4R ringtone format. It can be transferred to an iPhone to use custom ringtone sounds.