Click the "Select File" button above, and choose your M4R file.
You'll see a preview.
Click the "Convert file to..." button to save your file in the format you want.
Convert M4R to another file type
The converter easily converts your M4R file to various formats - free and online. No Media Player or extra software needed.
Convert a file to M4R
The converter also works in reverse, so you can convert other Audio formats to M4R with high quality output.
About M4R files
The .M4R file format is essentially a proprietary wrapper used by Apple to distinguish ringtones from standard songs on iOS devices. Under the hood, an M4R file is identical to an M4A file - it uses the MPEG-4 Part 14 container and Advanced Audio Coding (AAC) for compression. The critical difference lies in the usage constraints: for an iPhone to recognize the file as a selectable ringtone, it must use the .m4r extension and, crucially, must not exceed 40 seconds in duration. This arbitrary restriction is a frequent source of frustration for users who simply want to set a full song as their ringtone. Furthermore, while these files work seamlessly within the Apple ecosystem (synced via iTunes or Finder), they are virtually useless on Android devices or standard media players without conversion. To use an iPhone ringtone on an Android phone or PC, you should convert the .M4R to a universally supported format like MP3 or WAV. Conversely, to create a custom ringtone for an iPhone from your music library, you must trim the audio to under 40 seconds and convert the source file (usually MP3) specifically to .M4R. Convert.guru handles these conversions instantly, ensuring the correct encoding and headers are present so the file is actually recognized by your device.
Use Convert.Guru to open and convert your M4R file.
If you want to convert M4R file to MP3, WAV, M4A, MP4, AIFF, AAC, OGG, FLAC, WMA, OPUS, ALAC or APE, you can use Apple Music or similar software from the "iPhone Audio Ringtone" category. In the File menu, look for Save As… or Export….
To convert MIDI, AAC, TTA, AU, WV, DTS, MID, FLAC, RA, MP3, PCM or WAV files to M4R, try Apple Music or another comparable tool in the "iPhone Audio Ringtone" category.
The M4R Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our M4R converter.