Convert MP3 to Lossless AIFF Format
Lossy compression discards audio above ~16 kHz at 128 kbps; noticeable quality loss compared to modern codecs like AAC and Opus at the same bitrate. Converting to AIFF gives you a key advantage: stores uncompressed pcm audio with rich metadata (artwork, lyrics, comments) in one file — something wav historically lacked. AIFF is best for uncompressed audio on macos with embedded metadata — apple's equivalent of wav.
Why Convert MP3 to AIFF?
Lossy compression discards audio above ~16 kHz at 128 kbps; noticeable quality loss compared to modern codecs like AAC and Opus at the same bitrate — converting to AIFF overcomes this by providing stores uncompressed pcm audio with rich metadata (artwork, lyrics, comments) in one file — something wav historically lacked
AIFF is the right choice when you need to: exchanging uncompressed audio between macos-based music production tools
Gain broader compatibility — AIFF works with macOS (native), Logic Pro, GarageBand, Pro Tools, VLC, most DAWs; Windows support via third-party players
Prevent further quality degradation — once converted to AIFF, no additional data is lost on re-saves
MP3 vs AIFF — Format Comparison
MPEG-1 Audio Layer 3 (.mp3)
Audio Interchange File Format (.aiff)
How to Convert MP3 to AIFF
Upload your MP3 file
Drag your .mp3 file onto the upload area or click to browse. We accept MP3 files up to 100 MB.
Choose AIFF as output format
Select .aiff (Audio Interchange File Format) from the format list. AIFF uses lossless encoding, so your output quality matches the source.
Convert and download
Click Convert and wait for processing. Your AIFF file will be ready to download in seconds. The result is optimized for uncompressed audio on macos with embedded metadata — apple's equivalent of wav.
Frequently Asked Questions
Will converting MP3 to AIFF improve my file's quality?
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No — converting a lossy MP3 to lossless AIFF preserves exactly what you have, but cannot restore data already discarded by MP3 compression. The benefit is that no further quality is lost on subsequent edits and re-saves.
How large will my AIFF file be compared to the original MP3?
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MP3 files are typically 3 MB – 15 MB per song, while AIFF files are typically 10 MB – 100 MB per minute. The actual size depends on content complexity and any quality settings you choose.
What software can open the converted AIFF file?
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AIFF is compatible with: macOS (native), Logic Pro, GarageBand, Pro Tools, VLC, most DAWs; Windows support via third-party players.
What is the maximum file size I can convert?
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PureConverter accepts MP3 files up to 100 MB. Your files are processed securely and deleted from our servers after conversion.
What's the difference between MP3 and AIFF?
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MP3 (MPEG-1 Audio Layer 3) is best for distributing music and podcasts with the widest possible device compatibility and reasonable file sizes. AIFF (Audio Interchange File Format) is best for uncompressed audio on macos with embedded metadata — apple's equivalent of wav. Key tradeoff: MP3's advantage is absolute universal compatibility — every audio player, phone, car stereo, and bluetooth device ever made supports mp3, while AIFF's advantage is stores uncompressed pcm audio with rich metadata (artwork, lyrics, comments) in one file — something wav historically lacked.
Pro Tips for MP3 to AIFF Conversion
AIFF preserves full quality, so your output file will be as good as the MP3 source — no need to worry about compression artifacts
Keep a backup of your original MP3 file — while our conversion is reliable, having the source is always recommended
AIFF works especially well for: archiving studio masters on macos where wav metadata support was historically poor
Did you know? AIFF was based on Electronic Arts' IFF (Interchange File Format) from the Amiga — Apple adapted the Amiga's file structure for Macintosh audio, which is why AIFF uses big-endian byte order while WAV uses little-endian.
Ready to Convert?
Upload your MP3 file above and get your AIFF in seconds. Free, fast, and secure.