M4A (MPEG-4 Audio) is Apple's preferred audio format, typically using AAC compression for high-quality audio at small file sizes.
Core Audio Format (CAF) is Apple's audio container designed to overcome the file size and sample rate limitations of AIFF and WAV.
Reach for M4A when your priority is apple ecosystem, itunes, podcasting — its efficient compression makes sharing fast and storage minimal.
Reach for CAF when your priority is apple audio production, professional editing — its uncompromising quality ensures every detail is preserved.
Learn more about M4A and CAF formats in our detailed guide.
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M4A (M4A audio) - MPEG-4 Audio, Apple AAC container format. Best for apple ecosystem, itunes, podcasting.
CAF (CAF audio) - Core Audio Format, Apple's professional audio format. Ideal for apple audio production, professional editing.
Yes, GoConvertFile offers free conversion of M4A to CAF for files up to 100MB. No registration required.
Most M4A to CAF conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.
CAF is ideal for apple audio production, professional editing. Core Audio Format, Apple's professional audio format
No, converting M4A to CAF does not cause additional quality loss — CAF uses lossless compression. However, any artifacts already present in the original M4A file will persist in the CAF output.
CAF files are typically 2-5x larger than equivalent M4A files because CAF preserves all pixel data. This is expected and necessary for lossless quality.