AIFF to FLAC Converter
Convert AIFF audio files to FLAC format for lossless compression with smaller file sizes. FLAC provides perfect audio quality with efficient storage. Professional-quality audio conversion powered by FFmpeg, all processing happens securely in your browser.
Recommended Settings
For Archiving
- •Level 8 for maximum compression
- •100% lossless quality
- •Smaller than WAV/AIFF, same quality
For Production
- •Level 5 for balanced performance
- •Faster encoding/decoding
- •Suitable for editing workflows
Pro Tips
- •All compression levels are lossless - only file size differs
- •FLAC files are typically 50-60% smaller than AIFF
- •Level 8 takes longer but creates smallest files
Most Popular
Most users choose level 5 for balanced compression and speed
When to Use This Tool
FLAC provides perfect quality preservation with 50% compression, ideal for archiving audio collections.
Recommended: Level 5-8
FLAC is the preferred format for high-fidelity music libraries with no quality loss.
Recommended: Level 8
Use FLAC for lossless intermediate files in audio editing and production workflows.
Recommended: Level 5
How It Works
Upload your AIFF audio file
Select compression level (0-8)
FFmpeg processes lossless FLAC encoding
Download your converted FLAC file
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by FFmpeg.wasm (WebAssembly) for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
What is FLAC format?
FLAC (Free Lossless Audio Codec) is a lossless compression format that preserves 100% of the original audio quality while reducing file size by 40-60%. Unlike MP3 or AAC, no quality is lost.
What compression level should I use?
Level 5 (default) offers a good balance of compression and speed. Level 8 provides maximum compression but takes longer. All levels are lossless - they only affect file size and encoding time, not quality.
Is FLAC better than WAV?
FLAC and WAV have identical audio quality, but FLAC files are 40-60% smaller. FLAC also supports metadata tags, making it more practical for music libraries.
Why convert AIFF to FLAC?
Both AIFF and FLAC are lossless, preserving identical quality. FLAC offers better compression (smaller files) and superior metadata support, making it more efficient for storage and organization.
What devices support FLAC?
FLAC is widely supported on computers, many portable audio players, and Android devices. iPhone/iOS requires third-party apps. Most media players support FLAC playback.