Convert AIFC to ALAC — Free Online Converter

AIFC (AIFF-C) is Apple's legacy compressed audio format from the late 1980s, supporting codecs like IMA ADPCM, MACE 3:1/6:1, and G.711 variants alongside uncompressed PCM. ALAC (Apple Lossless Audio Codec) is Apple's modern lossless compression format, introduced in 2004 and open-sourced in 2011. ALAC achieves 40-60% compression of PCM data without any quality loss.

Converting AIFC to ALAC moves legacy Apple audio into Apple's current lossless standard. ALAC plays natively on every Apple device — iPhone, iPad, Mac, Apple TV, HomePod — and is the format used by Apple Music for lossless streaming. This conversion bridges two generations of Apple audio technology.

AIFC's compressed codecs (MACE, IMA ADPCM) have zero support on modern Apple devices. You cannot play a MACE-compressed AIFC file on an iPhone or through Apple Music. ALAC, as Apple's official lossless codec, works everywhere in the Apple ecosystem without any compatibility concerns.

For AIFC files containing uncompressed PCM, converting to ALAC provides genuine lossless compression — reducing file size by 40-60% while preserving bit-perfect audio quality. This is a strict improvement: smaller files, identical audio, and universal Apple device support. Even for MACE-compressed AIFC sources, ALAC wraps the decompressed audio in a modern, well-supported container.