AIFF to FLAC Converter
Compress AIFF to FLAC — identical lossless quality at about half the size, with tags. Free, in your browser, no signup.
Drag & drop your AIFF file here, or browse
Big AIFF files eating your disk? This free converter turns .aiff audio into FLAC in seconds — identical quality, about half the size — no software or signup. Files up to 30MB are converted directly and nothing is stored after your download.
How to Convert AIFF to FLAC
1. Upload your AIFF file
Drag a file onto the box above, or click to browse. .aiff, .aif, and .aifc are accepted.
2. FLAC is selected
FLAC is lossless, so there's no bitrate to choose — the quality setting doesn't apply.
3. Convert & download
Click Convert & Download. Your FLAC file downloads automatically.
Why Convert AIFF to FLAC?
AIFF is uncompressed (Apple's equivalent of WAV), so files are large — about 10 MB per minute. FLAC is lossless compression: it shrinks that audio by roughly 40–60% without losing anything and reconstructs the exact original on playback. So a FLAC made from an AIFF is bit-for-bit identical audio in about half the space, with proper tags and artwork that AIFF handles less consistently. It's the best way to archive an uncompressed library. See FLAC vs AIFF. Need the reverse? Use FLAC to AIFF.
Frequently Asked Questions
How do I convert AIFF to FLAC?
Upload your .aiff file, keep FLAC selected, then click Convert & Download. The FLAC is created and downloaded automatically — no software or signup needed.
Does converting AIFF to FLAC lose quality?
No. AIFF is uncompressed and FLAC is lossless, so the conversion is exact and fully reversible — identical audio at roughly half the size.
How much smaller is FLAC than AIFF?
Roughly 40–60% smaller — a ~30 MB AIFF becomes about 15–18 MB, with no quality change.
Is the AIFF to FLAC converter free?
Yes — it's completely free, with no account, no watermarks, and no limit on how many files you convert.