AIFF to FLAC converter
Convert AIFF to FLAC free online. Compress uncompressed Apple AIFF into lossless FLAC for smaller files with zero quality loss. No signup, 500 MB limit.
Drop a file to convert here
or click to browse
About Free Lossless Audio Codec
Common Use Cases
- Compressing AIFF archives without quality loss
- Migrating Apple audio to open lossless format
- Reducing AIFF file sizes for storage and sharing
AIFF stores raw uncompressed PCM audio, which is perfect for editing but wasteful for storage and sharing. FLAC compresses the same audio losslessly, typically reducing file size by 30-50% with absolutely no quality loss. The audio is bit-for-bit identical when decoded. FLAC also has much broader cross-platform support than AIFF, making it the preferred format for lossless music libraries.
Both AIFF and FLAC are lossless, meaning the audio quality is identical. The difference is that FLAC applies lossless compression (like ZIP for audio), reducing file size by 30-50% without discarding any data. AIFF stores the same audio uncompressed.
Why Convert AIFF to FLAC?
Smaller files with zero quality loss
FLAC files are typically 30-50% smaller than the equivalent AIFF. A 50 MB AIFF track becomes 25-35 MB as FLAC with bit-for-bit identical audio.
Broader cross-platform support
FLAC is supported on Windows, macOS, Linux, Android, iOS, and every major media player and server. AIFF support outside of Apple software is inconsistent.
Open, future-proof format
FLAC is an open standard maintained by Xiph.org with decades of industry adoption. AIFF is Apple-specific and less commonly used outside Mac audio workflows.
Full metadata support
FLAC supports rich Vorbis comment metadata including album art, ReplayGain, and custom tags. It is the standard format for music archivists and collectors.
When to use each
Keep AIFF when...
- Editing in Logic Pro (expects AIFF)
- DAW workflow requires AIFF
- Burning Red Book audio CDs
- Collaborators expect AIFF
- Already works in your current setup
Convert to FLAC when...
- Archiving music collections
- Saving disk space on lossless libraries
- Building a cross-platform music library
- Adding to Plex, Jellyfin, or Roon
- Sharing lossless audio with others
Common use cases
- Compressing AIFF archives without quality loss
- Migrating Apple audio to open lossless format
- Reducing AIFF file sizes for storage and sharing
How to use
- Upload your AIFF file. Drag and drop an .aiff or .aif file onto the upload area, or click to browse from your device. Files up to 500 MB are supported.
- Start the conversion. Click Convert File. Your AIFF PCM audio is losslessly compressed into FLAC on our servers using FFmpeg.
- Download your FLAC. Once processing finishes, click the download link to save your FLAC. Both the uploaded AIFF and converted output are deleted from our servers within 1 hour.
Frequently asked questions
- Is converting AIFF to FLAC lossless?
- Yes. Both formats are lossless. The audio is bit-for-bit identical when decoded. FLAC simply stores it more efficiently using lossless compression.
- How much smaller is FLAC compared to AIFF?
- Typically 30-50% smaller. A 50 MB AIFF track usually compresses to 25-35 MB as FLAC, depending on the audio content. Dense, complex audio compresses less than sparse material.
- Will my metadata transfer?
- Yes. FFmpeg maps AIFF metadata to FLAC Vorbis comment fields. Standard tags and embedded album art are preserved.
- Does FLAC play in Logic Pro?
- Logic Pro does not import FLAC natively. If you need to bring the audio back into Logic, convert the FLAC to AIFF or WAV first. For archival and playback, FLAC is the better choice.
- Is converting AIFF to FLAC free?
- Yes. Anyone can convert for free with no signup. Anonymous users have a daily cap, registered accounts get higher limits, and Premium or Lifetime members get unlimited conversions.
- Can I convert FLAC back to AIFF?
- Yes, and the round trip is completely lossless. AIFF to FLAC to AIFF produces audio identical to the original file.
- Is there a file size limit?
- Yes. The maximum upload size is 500 MB.