Convert MKV to M4R
Pull the soundtrack out of any MKV video and save it as M4R in seconds. Conversion happens inside your browser, so even large or private videos are never uploaded.
Drop MKV files here
MP3, WAV, FLAC, M4A, OGG, OPUS, AAC, AIFF, WMA, AMR, MP4, MOV & more · Processed on your device - nothing is uploaded
How to convert MKV to M4R
- Click "Choose files" or drag your MKV videos onto the page.
- Make sure "M4R" is selected as the output format (256 kbps is a good default).
- Click Edit to select the best 30-40 seconds of the song, then Trim.
- Click Convert, then Download your M4R files.
Why convert MKV to M4R?
M4R files are much smaller than video and play on any music player, phone or car stereo.
M4R is the only format iPhone accepts for custom ringtones. Trim your clip to 40 seconds or less.
M4R is best for custom iPhone ringtones and alert tones. iPhone (via Finder, iTunes or GarageBand), macOS.
Will I lose quality?
The audio is decoded from the MKV video and encoded to M4R. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for M4R.
MKV vs M4R
| MKV | M4R | |
|---|---|---|
| Full name | Matroska Video | iPhone Ringtone (AAC) |
| Type | video | lossy |
| Best for | films, TV recordings and archives | custom iPhone ringtones and alert tones |
| Typical size | varies | ~1.9 MB at 256 kbps per minute |
| Compatibility | VLC, Plex, Kodi, most modern players. | iPhone (via Finder, iTunes or GarageBand), macOS. |
| Developed by | - | Apple (2007) |
MKV to M4R: questions
How do I convert MKV to M4R?
Open this page, add your MKV file, make sure M4R is selected as the output format and click Convert. Your M4R file is ready to download in seconds.
Will converting MKV to M4R lose quality?
The audio is decoded from the MKV video and encoded to M4R. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for M4R.
Is this MKV to M4R converter free and safe?
Yes. It's free with no watermark or sign-up. Files are processed locally in your browser, so your audio is never uploaded or stored on our servers.
Can I convert many MKV files to M4R at once?
Yes - add up to 5 files at a time on the free plan (unlimited with Pro), convert them all with one click and download them as a ZIP.
What is the difference between MKV and M4R?
MKV (Matroska Video) is a video format, an open container that can hold many audio, video and subtitle tracks. M4R (iPhone Ringtone (AAC)) is a compressed (lossy) format: the iPhone ringtone format - AAC audio with an .m4r extension, limited to 40 seconds.
Does it work on Mac, Windows, iPhone and Android?
Yes. The MKV to M4R converter runs in any modern browser - Chrome, Safari, Edge or Firefox - on desktop and mobile. No software to install.