M4R to AAC
Convert M4R files to AAC online for free. Fast, secure, and no installation required. Best M4R to AAC tool.
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What is M4R?
iPhone Ringtone
M4R files are essentially renamed M4A (AAC) files used specifically as ringtones on the iPhone. They are limited to 40 seconds in length and use AAC encoding.
- iPhone ringtone
- AAC encoded
- 40s limit
What is AAC?
Advanced Audio Coding
AAC is an audio coding standard for lossy digital audio compression. Designed to be the successor of the MP3 format, AAC generally achieves better sound quality than MP3 at the same bit rate.
- Better quality than MP3
- Standard for YouTube/Apple
- High efficiency