AC3 to M4R converter

Convert AC3 to M4R for free, right in your browser. Your files never leave your device.

Choose AC3 files or drop them here · paste a link below

Converted on your device · never uploaded · Free limits

Where it runs: On your device
Free allowance: Unlimited
Typical time: Usually under 5 seconds
Sign-up: Not needed

What happens to your AC3

iPhone ringtones are limited to 40 seconds, so longer audio is trimmed.

This conversion runs inside your browser, so the file is never uploaded. Files over 400 MB are sent to our server instead, and deleted within 60 minutes.

How to convert AC3 to M4R

Choose your file Tap Choose files and pick the AC3 file, or drop it onto the page. You can add several at once.
Convert to M4R The conversion starts on your device straight away. Nothing is uploaded.
Download Tap Download to save the result.

What is an AC3 file?

Dolby's surround-sound format used on DVDs, Blu-rays and TV broadcasts.

VLC, home cinema receivers and most video players.

More about AC3 files

What is an M4R file?

An AAC audio file renamed for iPhone ringtones. Ringtones must be 40 seconds or shorter.

iPhone (through Finder or iTunes) and GarageBand.

More about M4R files

Questions

Is converting AC3 to M4R free?

Yes, completely. This conversion runs on your device, so there is no daily limit and no sign-up. We never ask you to pay after you have converted.

Is it safe to convert my AC3 files here?

Yes. The conversion happens inside your browser, and the file never leaves your phone or computer.

How long does AC3 to M4R take?

Usually under 5 seconds. Bigger files take longer, and you can watch the progress on each file.

Can I convert AC3 to M4R on my iPhone or Android phone?

Yes. The converter works in Safari, Chrome and any modern browser. Tap Choose files, pick from Photos or Files, and download the result to your phone.

How do I open an M4R file?