MP3 to M4R converter (iPhone ringtone)

Convert an MP3 to the M4R format used for iPhone ringtones. 30 seconds are taken from the time you enter, as Apple states that a ringtone can be up to 30 seconds long.

Choose the output format

M4R (iPhone ringtone)192 kbps

Sound quality (bitrate)

192 kbps is suitable for most purposes. A 320 kbps file is about 70% larger.

30 seconds are taken from this time. Enter a time such as 45 or 1:05.

Upload files

or drag and drop files here

Reads MP3, M4A, WAV, FLAC, OGG and other audio, as well as MP4, MOV, WebM and other videos. Not more than 4 GB per file, up to 20 files at a time.

Check and download

After you upload files, the results can be checked and downloaded here.

How to use

  1. In step 1, choose the output format and settings.
  2. In step 2, upload the files. Several can be chosen at once, and processing starts after upload.
  3. When all files are done, download them one by one or together.

Notes

  • M4R is MPEG-4 audio (AAC) with the .m4r file extension. iPhone ringtones use this format.
  • If a file already uses the target codec (for example, AAC audio to M4A), the original audio is copied without re-encoding.
  • For M4R, 30 seconds are taken from the start time you enter. According to Apple, a ringtone can be up to 30 seconds long.
  • WAV is uncompressed and about 7 times the size of a 192 kbps MP3.
  • Processing time depends on your device and the length of the file, and progress is shown on the page. Processing takes longer on a phone, so please keep this page in the foreground and do not lock the screen.

Questions and answers

What happens if the MP3 is longer than 30 seconds?
30 seconds are taken from the time in “Ringtone start time”, and the rest is not saved.
Can I convert several files at once?
Yes, up to 20 files at a time. When all are done, they can be downloaded together as one ZIP file.
Can I extract the audio from a video?
Yes. Upload the video file, and only its audio is saved.

Sources

Checked: October 2026

Software and licences

The following software is downloaded with this page and runs in your browser. The LGPL components are distributed unmodified as WebAssembly; their source code is available at each link.

  • Mediabunny (MPL-2.0): Reads and writes MP4, MOV, WebM, MP3, WAV and other files
  • LAME 3.100 (LGPL-2.0-or-later): Encodes MP3 (through @mediabunny/mp3-encoder)
  • FFmpeg AAC encoder (LGPL-2.1-or-later): Encodes AAC audio for M4A, M4R and MP4 when the browser cannot (through @mediabunny/aac-encoder)