FLAC to AIFF Converter
Convert FLAC to AIFF free — no upload, no signup
To convert FLAC to AIFF, drop your FLAC audio files into the box below and click Convert. Fylo converts with ffmpeg running inside your browser, so nothing is uploaded and there's no signup or watermark. Lossless FLAC to lossless AIFF for Mac apps.
Drop audio files here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
AIFF is lossless — no bitrate to choose. Sample rate and channels are under Advanced.
Advanced
How to convert FLAC to AIFF
Add your FLAC files
Drag and drop FLAC files into the box or tap to choose them. The converter engine (about 31 MB) downloads once, the first time you convert.
Check the settings
AIFF is lossless, so there's no bitrate to pick. Change sample rate or switch to mono under Advanced if a device needs it.
Convert and download
Click Convert, then download each AIFF file or all of them as one ZIP.
Why convert FLAC to AIFF?
Logic Pro and GarageBand prefer AIFF for editing.
What happens when you convert FLAC to AIFF?
Decoded samples are written as 16-bit PCM AIFF — identical audio, about twice the size.
How does Fylo convert FLAC to AIFF?
Fylo decodes the FLAC audio in the FLAC with ffmpeg compiled to WebAssembly and encodes it with 16-bit big-endian PCM with no compression. Both formats are lossless, so the decoded samples are identical; only the container and file size change (a 3-minute song is ≈ 18–24 MB as FLAC and ≈ 32 MB as AIFF). The original sample rate and channel layout are kept unless you change them under Advanced.
What's the difference between FLAC and AIFF?
FLAC (Free Lossless Audio Codec) was released in 2001 and later maintained by the Xiph.Org Foundation. It compresses PCM audio like a ZIP file compresses data: nothing is thrown away, so a FLAC decodes to exactly the same samples as the source WAV, typically at 50–70% of the size.
AIFF (Audio Interchange File Format) was created by Apple in 1988, based on Electronic Arts' IFF format. Like WAV it stores uncompressed PCM audio — just with big-endian byte order — so the two contain identical sound data at the same settings.
Learn more: FLAC format guide · AIFF format guide
| Property | FLAC | AIFF |
|---|---|---|
| Compression | Lossless | None (PCM) |
| Typical bitrate | ≈ 700–1,100 kbps | 1,411 kbps (CD quality) |
| 3-minute song | ≈ 18–24 MB | ≈ 32 MB |
| Tags and cover art | Yes (with cover art) | Yes (ID3 chunk) |
| Compatibility | Android, Windows 10+, macOS, most players and hi-fi gear | macOS, iTunes, DAWs; less common on Windows |
| Best for | Archiving music without quality loss | Mac audio editing and music production |
| Introduced | 2001 | 1988 |
Frequently asked questions
Is it lossless?
Yes (24-bit sources become 16-bit).
Why AIFF over WAV?
Better metadata support in Apple apps.
Is my FLAC file uploaded to a server?
No. Fylo runs ffmpeg, the same engine used by professional video tools, compiled to WebAssembly inside your browser. Your FLAC file is read directly from your device and never sent anywhere.
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