Convert CAF to AAC — Free Online Converter

CAF (Core Audio Format) is Apple's professional audio container supporting any codec, unlimited file sizes, and rich metadata including channel layouts, markers, and regions. CAF is the native recording format for Logic Pro and macOS Core Audio applications. AAC (Advanced Audio Coding) is the industry-standard lossy codec used by iTunes, YouTube, Apple Music, and every major streaming platform.

Converting CAF to AAC extracts and re-encodes the audio (or directly copies if the CAF already contains AAC) into the universally compatible M4A container. This is the standard workflow for preparing macOS professional recordings for distribution.

CAF is a macOS-only format with no support on Windows, Linux, Android, or web browsers. AAC in M4A is universally playable — every device and platform supports it. Converting CAF to AAC enables distribution, sharing, and playback outside the macOS professional audio environment.

If the CAF already contains AAC audio, the conversion can be a zero-quality-loss remux — simply repackaging the AAC stream from CAF into M4A without re-encoding. This is the fastest and highest-quality path when the source is already AAC-encoded.