Convert AIFF to FLAC without losing a single bit of quality. Free, private and right in your browser.
Drop audio or video files here
or paste them, or click to choose — several files at once
Choose filesMP3, WAV, FLAC, OGG, M4A, AAC, OPUS, AIFF, WMA, APE, AMR, MP4 and more · up to 300 MB per file
The converter (about 30 MB) is downloaded once on first use and then cached. Your files never leave your device.
Drop AIFF files onto the converter, paste them, or click to choose. You can add many at once.
FLAC is already selected. If you like, adjust the quality, sample rate or channels before or after adding files.
Each file is converted in your browser in seconds. Save them one by one, or all at once as a ZIP.
Audio Interchange File Format
Apple's uncompressed audio format
AIFF is Apple's counterpart to WAV: uncompressed PCM audio used by Logic Pro, GarageBand and professional audio work on the Mac.
Free Lossless Audio Codec
Lossless compression for music lovers
FLAC compresses audio without discarding anything: once decoded, it is bit-for-bit identical to the original, yet takes roughly half the space of WAV.
Audio is converted by ffmpeg running inside your browser. Your files never reach a server.
Queue up to 50 files and download them one by one or together as a ZIP.
Set the bitrate, bit depth, sample rate and channels — or simply keep the sensible defaults.
Add your AIFF files to the converter above. FLAC is already selected as the output, so conversion starts right away. When a file is ready, click Download, or use Download all to get a ZIP.
No. Both AIFF and FLAC are lossless, so the audio stays identical, bit for bit. Only the file size and compatibility change.
16-bit keeps CD-quality sources exactly; use 24-bit for high-resolution recordings. FLAC is lossless at any setting, so there is no bitrate to choose.
No. The AIFF to FLAC conversion runs entirely in your browser using ffmpeg compiled to WebAssembly. Your files are never sent to a server, so even private recordings stay on your device.
Yes. Add up to 50 files; they are converted one after another, and you can download each FLAC file separately or all of them together as a ZIP archive.