Convert M4A to FLAC — Free Online Converter

Converting M4A to FLAC moves audio from Apple's MPEG-4 container to the open-source Free Lossless Audio Codec. If the M4A contains ALAC (Apple Lossless), the resulting FLAC is bit-perfect — a lossless-to-lossless container swap with zero quality loss. If the M4A contains AAC (lossy), the FLAC wraps the decoded lossy audio in a lossless container — the file gets larger but no quality is recovered. This conversion is essential for moving from Apple's ecosystem to open-source audio workflows.

FLAC is the universal lossless standard outside Apple's ecosystem. Linux media players, Android (since 3.1), most car stereos, Sonos speakers, and audiophile DACs all support FLAC natively. If you are migrating from an Apple ALAC library to a cross-platform setup, converting to FLAC ensures playback everywhere. FLAC also uses Vorbis comments for metadata, which are supported by more tagging tools than iTunes atoms.