How to convert AIFF to M4R
- Add your .AIFF file - drop it in the box above or click to browse.
- Convert it to .M4R in a few seconds.
- Download your new .M4R file.
What to expect
- iOS enforces a 30-second maximum - a longer
.m4rwill not appear as a ringtone on the phone. - Renaming an
.aiffto.m4rwithout re-encoding will not work; iOS requires AAC audio inside the file. - M4R uses lossy AAC compression, so keep your original
.aiffif you need the lossless source.
Frequently asked questions
Can I just rename an AIFF file to .m4r?
No - the file must contain AAC audio, not AIFF PCM. Renaming changes only the extension, not the audio data inside.
Why does my ringtone not appear on my iPhone?
The most common cause is length. The clip must be 30 seconds or shorter - check your trim points before converting.
Does converting to M4R reduce audio quality?
Yes, AAC is lossy while AIFF is lossless, but the difference is rarely noticeable for a short ringtone played through a phone speaker.
Do I need iTunes to make an M4R file?
No - any tool that encodes AAC audio works, including the converter on this page or FFmpeg on the command line.
