Convert M4R to CAF

Convert M4R files to CAF format online for free. No upload required, 100% private.

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M4RCAFQuality Note

Converting from M4R (lossy) to CAF (Lossless) will increase file size but will NOT improve audio quality. The quality lost during the original compression cannot be recovered.

About M4R

M4R

iPhone Ringtone Format

M4R is the ringtone format used by Apple iPhones. It is essentially an M4A file with a different extension, limited to 40 seconds for ringtones.

Extension

.m4r

Developed By

Apple Inc.

Released

2007

Compression

Lossy

Typical Use Cases

iPhone ringtonesiOS alert tonesCustom notification sounds

Pros

• Native iPhone support
• Easy to create from M4A
• Good audio quality

Cons

• iPhone only
• 40 second limit
• Requires iTunes for transfer

About CAF

CAF

Core Audio Format

CAF is a flexible audio container format developed by Apple. It can store any audio format supported by Core Audio and has no file size limitations.

Extension

.caf