Convert MP3 to M4R
MP3 audio → iPhone ringtone (M4R): convert online for free. MP3 to M4R conversion runs right in your browser — your files never leave your device.
Drop files here or choose them
You can also paste files with Ctrl+V
Files never leave your device
About the formats
- MP3 audio
- The most widespread lossy audio format. Plays on almost any device.
- iPhone ringtone (M4R)
- AAC audio in an MP4 container with the .m4r extension: the iPhone ringtone format, up to 40 seconds long.
How to convert MP3 to M4R
- Choose a MP3 audio file or drag it onto the page.
- Check the settings and click Convert.
- Download the iPhone ringtone (M4R) file when it is ready.
Frequently asked questions
How long can an iPhone ringtone be?
Up to 40 seconds. If the end is left empty, the first 40 seconds from the start are taken; set the start and end to pick the chorus. Then add the M4R file to your iPhone with Finder or iTunes.
Is converting MP3 to M4R free?
Yes. Conversion is free, with no sign-up and no watermarks.
Are my MP3 files uploaded anywhere?
No. The conversion runs in your browser, so your files never leave your device.
Will the quality change when converting to M4R?
Quality depends on the target format and the settings you choose; lossy formats let you adjust the quality level.