AAC to M4R converter (iPhone ringtone)

Turn an AAC or M4A file into an iPhone ringtone (M4R), cut to 40 seconds or less, without re-encoding.

    Drop AAC, M4A files here or choose files.

    • 500MB per file. Ringtones are cut to 40 seconds or less. Up to 5 files at a time
    • The first time you use it, the browser downloads the video engine (about 31MB)

    Where the ringtone begins. Write 90 or 1:30. Leave blank to start from the beginning.

    iPhone ringtones can be up to 40 seconds. For a text tone, keep it to 30 seconds or less.

    Files never leave this device. Privacy policy

    Result

    Upload an AAC file, set the start time and click Convert. The M4R ringtone will appear here.

    What to do next

    AAC to MP3 converter

    For an Android ringtone, an MP3 is all you need.

    M4A to MP3 converter

    Convert an iPhone recording (M4A) to MP3.

    AAC to FLAC converter

    When you need a lossless file for editing or archiving.

    How it works

    Choose an AAC file, enter where the ringtone should begin, and click Convert. The tool saves 40 seconds (or the length you chose) from that point in the iPhone ringtone format, M4R.

    AAC audio is cut and moved without re-encoding, so it finishes in seconds and the sound is unchanged. M4A files work the same way.

    Things to know

    To install it, move the file over with Finder on a Mac or the Apple Devices app (iTunes) on Windows, or use the GarageBand app. The start point may be off by about 0.02 seconds.

    Frequently asked questions

    How do I get the M4R onto my iPhone?

    Mac: connect the iPhone with a cable, select it in Finder, and drag the M4R file onto the General tab. Windows: do the same in the Apple Devices app (or iTunes). Then go to Settings, Sounds & Haptics, Ringtone on the iPhone and pick it. Without a computer, open the audio in the GarageBand app and use Share, Ringtone.

    Why only 40 seconds?

    The iPhone does not list an M4R longer than 40 seconds as a ringtone. The tool saves 40 seconds (or the length you chose) from the start point you set. Text and alert tones work best at 30 seconds or less.

    Does the quality drop?

    For an AAC file, the tool cuts the range and swaps the container to M4R without re-encoding, so the sound is unchanged. A file that is really an MP3 with an .aac extension is converted to AAC at 192kbps.

    Are my files uploaded to a server?

    No. The conversion runs entirely in this browser, and the file never leaves your device. The only download is the conversion engine, once. The result disappears when you close the page, so use the save button to keep it.

    Related tools