Compress AIFF to AAC for Smaller File Sizes
Same massive file sizes as WAV (~10 MB/min at CD quality) and less common than WAV outside the Apple ecosystem. Converting to AAC gives you a key advantage: measurably better audio quality than mp3 at every bitrate — 128 kbps aac matches roughly 192 kbps mp3 in listening tests. AAC is best for streaming music and audio at high quality with lower bitrates than mp3 — the default codec for apple music and youtube.
Why Convert AIFF to AAC?
Same massive file sizes as WAV (~10 MB/min at CD quality) and less common than WAV outside the Apple ecosystem — converting to AAC overcomes this by providing measurably better audio quality than mp3 at every bitrate — 128 kbps aac matches roughly 192 kbps mp3 in listening tests
AAC is the right choice when you need to: encoding audio tracks for apple music, itunes, and apple podcast distribution
Gain broader compatibility — AAC works with iOS/macOS (native), iTunes, Apple Music, YouTube, Spotify, all modern browsers, Android
Reduce file size dramatically — 10 MB – 100 MB per minute files compress to 2 MB – 10 MB per song with AAC
AIFF vs AAC — Format Comparison
Audio Interchange File Format (.aiff)
Advanced Audio Coding (.aac)
How to Convert AIFF to AAC
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 AAC as output format
Select .aac (Advanced Audio Coding) from the format list. Adjust quality settings if needed — higher quality means larger file size.
Convert and download
Click Convert and wait for processing. Your AAC file will be ready to download in seconds. The result is optimized for streaming music and audio at high quality with lower bitrates than mp3 — the default codec for apple music and youtube.
Frequently Asked Questions
Will I lose quality converting AIFF to AAC?
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Yes — AAC uses lossy compression, which discards some data to achieve smaller files. Slightly less universal than MP3 on very old hardware; some legacy car stereos and portable players lack AAC support. For most practical purposes at high quality settings, the difference is imperceptible.
How large will my AAC file be compared to the original AIFF?
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AIFF files are typically 10 MB – 100 MB per minute, while AAC files are typically 2 MB – 10 MB per song. The actual size depends on content complexity and any quality settings you choose.
What software can open the converted AAC file?
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AAC is compatible with: iOS/macOS (native), iTunes, Apple Music, YouTube, Spotify, all modern browsers, Android.
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 AAC?
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AIFF (Audio Interchange File Format) is best for uncompressed audio on macos with embedded metadata — apple's equivalent of wav. AAC (Advanced Audio Coding) is best for streaming music and audio at high quality with lower bitrates than mp3 — the default codec for apple music and youtube. Key tradeoff: AIFF's advantage is stores uncompressed pcm audio with rich metadata (artwork, lyrics, comments) in one file — something wav historically lacked, while AAC's advantage is measurably better audio quality than mp3 at every bitrate — 128 kbps aac matches roughly 192 kbps mp3 in listening tests.
Pro Tips for AIFF to AAC Conversion
For the best AAC quality, start with the highest-resolution AIFF source available — lossy compression works better with more data to analyze
Keep a backup of your original AIFF file — while our conversion is reliable, having the source is always recommended
AAC works especially well for: creating compact audiobooks with high clarity at low bitrates (64 kbps he-aac)
Did you know? AAC was designed as the official successor to MP3 within the same MPEG standard — it's literally "MPEG-2 Part 7" and "MPEG-4 Part 3," but the MP3 brand name was so strong that AAC never fully replaced it in public consciousness.
Ready to Convert?
Upload your AIFF file above and get your AAC in seconds. Free, fast, and secure.