Convert AIFF to iPhone Audio — Free Online Converter

AIFF files play on iPhone, but at 10 MB per minute they drain both storage and battery faster than compressed alternatives. The iPhone Audio preset encodes AIFF to AAC-LC at 256 kbps — Apple's gold standard for music distribution — in an M4A container optimized for the iPhone's hardware audio decoder. The result sounds identical to AIFF on iPhone's DAC while consuming 80% less space.

iPhone storage is shared between photos, apps, messages, and system data. A modest AIFF library of 200 songs consumes roughly 8 GB, while the same library in AAC at 256 kbps takes about 1.6 GB. Beyond storage, iPhone's hardware AAC decoder is more power-efficient than its PCM playback path for large files, meaning better battery life during music listening.