Convert AIFF to FLAC Online
Same massive file sizes as WAV (~10 MB/min at CD quality) and less common than WAV outside the Apple ecosystem. Converting to FLAC gives you a key advantage: lossless compression reduces file sizes by 40–60% while guaranteeing bit-perfect reconstruction of the original audio. FLAC is best for archiving music collections at cd quality with ~50% file size reduction and bit-perfect playback.
Why Convert AIFF to FLAC?
Same massive file sizes as WAV (~10 MB/min at CD quality) and less common than WAV outside the Apple ecosystem — converting to FLAC overcomes this by providing lossless compression reduces file sizes by 40–60% while guaranteeing bit-perfect reconstruction of the original audio
FLAC is the right choice when you need to: building audiophile music libraries with verifiable bit-perfect quality
Gain broader compatibility — FLAC works with Foobar2000, VLC, Spotify (internal), Tidal, Amazon Music HD, Android, macOS (since Ventura), most modern devices
Your AIFF files were created for storing professional sound libraries on apple systems with embedded metadata, but now you need a format suited to different workflows
AIFF vs FLAC — Format Comparison
Audio Interchange File Format (.aiff)
Free Lossless Audio Codec (.flac)
How to Convert AIFF to FLAC
Upload your AIFF file
Drag your .aiff file onto the upload area or click to browse. We accept AIFF files up to 500 MB.
Choose FLAC as output format
Select .flac (Free Lossless Audio Codec) from the format list. FLAC uses lossless compression, so your output quality matches the source.
Convert and download
Click Convert and wait for processing. Your FLAC file will be ready to download in seconds. The result is optimized for archiving music collections at cd quality with ~50% file size reduction and bit-perfect playback.
Frequently Asked Questions
Is the AIFF to FLAC conversion lossless?
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When both formats support lossless data, the conversion preserves all content. Bit-perfect lossless; supports up to 32-bit / 655 kHz, surround sound, and embedded metadata.
How large will my FLAC file be compared to the original AIFF?
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AIFF files are typically 10 MB – 100 MB per minute, while FLAC files are typically 15 MB – 50 MB per song. The actual size depends on content complexity and any quality settings you choose.
What software can open the converted FLAC file?
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FLAC is compatible with: Foobar2000, VLC, Spotify (internal), Tidal, Amazon Music HD, Android, macOS (since Ventura), most modern devices.
What is the maximum file size I can convert?
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PureConverter accepts AIFF files up to 500 MB. Your files are processed securely and deleted from our servers after conversion.
What's the difference between AIFF and FLAC?
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AIFF (Audio Interchange File Format) is best for uncompressed audio on macos with embedded metadata — apple's equivalent of wav. FLAC (Free Lossless Audio Codec) is best for archiving music collections at cd quality with ~50% file size reduction and bit-perfect playback. Key tradeoff: AIFF's advantage is stores uncompressed pcm audio with rich metadata (artwork, lyrics, comments) in one file — something wav historically lacked, while FLAC's advantage is lossless compression reduces file sizes by 40–60% while guaranteeing bit-perfect reconstruction of the original audio.
Pro Tips for AIFF to FLAC Conversion
FLAC preserves full quality, so your output file will be as good as the AIFF source — no need to worry about compression artifacts
Keep a backup of your original AIFF file — while our conversion is reliable, having the source is always recommended
FLAC works especially well for: distributing high-resolution studio masters through services like bandcamp and qobuz
Did you know? Every FLAC file contains an embedded MD5 checksum of the original audio — you can verify at any time that your file hasn't been corrupted and is truly lossless, something no other audio format offers natively.
Ready to Convert?
Upload your AIFF file above and get your FLAC in seconds. Free, fast, and secure.