Convert MP3 to M4R
Convert MP3 to M4R online, free — no installation, no sign-up.
or drop files here to convert MP3 → M4R
Max file size 1 GB. Browser-side conversions have no upload limit.
How to convert MP3 to M4R
Add your file
Drop your MP3 file above or click Choose Files.
Convert
We convert your file securely on our server over an encrypted connection.
Download
Grab your new M4R file — done.
What is MP3?
MP3 is the universal lossy audio format, balancing small size with good quality.
What is M4R?
M4R is the iPhone ringtone format — a short AAC file with an .m4r extension.
Frequently asked questions
Drop your MP3 file into the box above (or click Choose Files), then click Convert and download your new M4R file. No account or software needed.
Yes — this converter is completely free with no watermarks and no sign-up.
Yes. Files are sent over an encrypted (HTTPS) connection and automatically deleted from our servers within an hour.
You control the output. Use the advanced options (the gear icon) to set quality, and we preserve as much fidelity as the M4R format allows.