Convert MIDI to ALAC — Free Online Converter

MIDI (.midi) represents music as a structured sequence of performance commands rather than recorded sound. The format emerged from the collaboration of major synthesizer manufacturers in the early 1980s to create a universal instrument communication protocol. Today, .midi files remain essential in music education software (MuseScore, Finale, Sibelius exports), procedural game music engines, and electronic music production as a lightweight, editable representation of musical ideas.

ALAC (Apple Lossless Audio Codec) is Apple's answer to FLAC — a lossless compression scheme that reduces PCM audio to approximately 40-60% of its original size without discarding any data. Converting MIDI to ALAC renders the score through software synthesis and packages the result in Apple's lossless format, ideal for listeners who want perfect audio quality within the Apple ecosystem without the storage penalty of uncompressed AIFF.

Music educators who distribute practice tracks, sight-reading exercises, or theory demonstrations as MIDI files can convert to ALAC for Apple-device-equipped classrooms. Students receive consistent, lossless audio playback on their iPads and iPhones without needing MIDI player apps. The lossless quality ensures that subtle musical details — articulations, dynamic shading, instrument timbres — survive for analytical listening exercises.

Composers building personal archives of MIDI work can render their entire catalog to ALAC for Apple Music integration. ALAC files appear in the Music app with full metadata support (title, artist, album artwork, track numbers), enabling organized library management that raw MIDI files cannot provide. The lossless format guarantees the archive can be transcoded to any future format without generational loss.