How to convert AC3 to M4R
To convert AC3 to M4R, upload your AC3 file, choose M4R as the output format and press Convert. The finished M4R file is ready to save to your phone or computer in seconds, free, with no watermark and no sign-up. Your file is deleted from our server about 30 minutes after the conversion.
This free online converter turns AC3 audio files into M4R in your browser, with no software to install and no watermark. The conversion runs on our server using ffmpeg, and the result is ready to save to your phone or computer in seconds. Your AC3 file is deleted automatically about 30 minutes after the conversion.
Reasons to switch from AC3 to M4R
- The format iPhone accepts for ringtones
- Small files
- Same AAC quality as M4A
- Opens in: iPhone, iTunes, Apple Music and GarageBand
What to expect from this conversion
- Both formats are lossy, so converting costs a little extra quality. If you still have the original, convert from that.
- M4R ringtones are trimmed to the first 40 seconds, the longest iPhone allows.
- Tags such as title and artist are carried over where M4R supports them.
AC3 vs M4R
| Property | AC3 | M4R |
|---|---|---|
| Full name | Dolby Digital | iPhone Ringtone |
| Released | 1991, Dolby Laboratories | 2007, Apple |
| Family | Audio | Audio |
| Compression | Lossy | Lossy |
| Opens in | DVD and Blu-ray players, AV receivers, VLC and video editors | iPhone, iTunes, Apple Music and GarageBand |
| Best for | DVD and Blu-ray authoring; home theatre audio | custom iPhone ringtones; text tones and alerts |
Steps to convert AC3 to M4R
- Drop your AC3 file onto the converter, or click to choose it.
- Check that M4R is selected as the target format and adjust the options if you want.
- Press Convert, then save the new M4R file to your device when it finishes.
Tips for the best result
- Choose High for music you care about and Small for voice recordings.
- Convert from the original lossless file when you have one.
Frequently asked questions
How do I convert AC3 to M4R?
Drop your AC3 file on the converter, confirm that M4R is the target format and press Convert. When it finishes, press Save to device or download the M4R file. No account or software is needed.
Is the AC3 to M4R converter free?
Yes. It is free, with no watermark, no sign-up and no limit on how many files you convert. The site is supported by ads.
What should I know before converting AC3 to M4R?
Both formats are lossy, so converting costs a little extra quality. If you still have the original, convert from that. M4R ringtones are trimmed to the first 40 seconds, the longest iPhone allows.
Will the sound quality change when converting AC3 to M4R?
Both formats are lossy, so converting costs a little extra quality. If you still have the original, convert from that.
Which programs open M4R files?
M4R files open in iPhone, iTunes, Apple Music and GarageBand.
How large a file can I convert?
Up to 200 MB per file. Files are deleted from the server about 30 minutes after conversion, and no one looks at them.