Opus Audio
A modern open codec that sounds excellent at very low bitrates.
- Type
- audio
- Best for
- voice and streaming
No account · no upload · no watermark
Convert OPUS to M4R. Completely free.
Drop your OPUS and get an M4R back, right here in this tab. Your own computer does the work, so nothing gets uploaded, and there's no paid version.
OPUS to M4R converter
iPhone Ringtone
The AAC-based file type iPhones use for ringtones, up to 40 seconds long.
- Type
- audio
- Best for
- iPhone ringtones
What to expect
iPhone ringtones can be up to 40 seconds, so set a trim range under More options to pick the best part.
How to convert OPUS to M4R
- Drop your OPUS on this page, or choose it from your device.
- M4R is already selected. Bitrate, trim and loudness are under More options.
- Press Convert and listen to the result before you download it.
Questions
Is this OPUS to M4R converter really free?
Yes, completely. Every tool and every format is free, and there's no paid version, account, watermark or daily limit.
Do my files get uploaded?
No. Your browser does the work on your own device, so your files stay with you. Closing the tab clears them from memory.
Can I convert several files at once?
Yes. Drop as many as you like, and the results can be downloaded together as a ZIP.
Does it work on a phone?
Yes, in a current mobile browser. Large files are limited by how much memory your device can spare.
What should I know about OPUS to M4R?
iPhone ringtones can be up to 40 seconds, so set a trim range under More options to pick the best part.
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Ready to convert your OPUS?
- Completely free
- Nothing uploaded
- No account
- No watermark