Free Online AIFF to FLAC Converter
Convert AIFF audio to FLAC online for free.
Selected files
| File name | Size | Convert to |
|---|
Pick a format to convert to.
Preparing files
Checking files and selected output formats.
When FLAC is the right output
FLAC is lossless audio compression: ~50% the size of WAV with mathematically identical audio. The audiophile format of choice: Tidal HiFi and Amazon Music HD stream FLAC, and vinyl-rip communities archive in it. Convert to FLAC when your destination is critical listening on capable gear, or long-term archival of source recordings.
AIFF vs FLAC: Side-by-side
Technical comparison of the two formats, useful for deciding which to use, or for confirming what changes during conversion.
| Property | AIFF | FLAC |
|---|---|---|
| Full name | Audio Interchange File Format | Free Lossless Audio Codec |
| Year introduced | 1988 | 2001 |
| Developer / standard body | Apple | Xiph.Org |
| MIME type | audio/aiff | audio/flac |
| File extension | .aiff / .aif | .flac |
| Compression | Uncompressed PCM (typically) | Lossless |
| Color / data depth | N/A | N/A (audio) |
| Max dimensions / size | 4 GB file size limit | 8 channels × 32-bit × 192 kHz |
| Transparency | No | No |
| Animation | No | No |
| Standard / specification | Apple AIFF | Xiph.Org FLAC |
| Best for | Apple-ecosystem professional audio, Final Cut Pro, Logic Pro | Audiophile listening, lossless music archives |
Frequently asked questions
How do I convert AIFF to FLAC?
Upload the AIFF file and choose an output format. The audio is re-encoded to FLAC and the track metadata is kept. No account is required, and whole albums or playlists can be uploaded together.
How to convert AIFF to FLAC without losing sound quality
FLAC is a lossless compressed audio format. Converting to a lossless target (WAV, FLAC, AIFF) preserves every detail of the original. Converting between lossy formats involves a small, usually inaudible re-encoding step. For the best result, always start from the highest-quality source file you have.
Can I convert multiple AIFF files to FLAC at once?
Yes. Upload a whole album or playlist of AIFF files and they are all converted to FLAC. Metadata (title, artist, album, cover art) carries over for each track, so your library stays organised after conversion. Batch uploads need a paid plan, Pro takes 20 files at a time and Business 100, while the free plan converts one file at a time.
Why convert AIFF to FLAC instead of keeping AIFF?
AIFF is Apple's uncompressed audio format used for professional audio on Mac. FLAC is better for archiving music at full quality with smaller size than WAV. Convert when the destination device, app, or platform handles FLAC more reliably than AIFF.
Does AIFF to FLAC conversion keep track info like artist and album?
Yes. ID3 metadata such as title, artist, album, and cover art carries over automatically wherever the FLAC format supports it, so your library stays organised after conversion.
What is AIFF?
AIFF is Apple's uncompressed audio format, typically used for professional audio on Mac. Converting it to FLAC produces a file that opens on systems without AIFF support.