Convert CAF to M4R

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

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CAFM4RSize Reduction

Converting from CAF (Lossless) to M4R (lossy) will significantly reduce file size. Some audio quality will be lost, but the difference is often imperceptible at higher bitrates.

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
Developed By
Apple Inc.
Released
2005
Compression
Lossless

Typical Use Cases

iOS developmentMac audio appsLong recordingsProfessional audio

Pros

  • • No size limit
  • • Flexible codec support
  • • Apple ecosystem

Cons

  • • Apple only
  • • Limited cross-platform
  • • Requires conversion for sharing

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