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Convert AIFF to AAC - Professional Audio Made Portable

Transform studio-quality AIFF files into compact AAC format for any device.

Step 1: Upload your files

You can also Drag and drop files.

Step 2: Choose format
Step 3: Convert files

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Why Convert AIFF to AAC?

AIFF files are excellent for professional audio work, but their uncompressed nature makes them impractical for everyday use. A single 4-minute song can exceed 40MB in AIFF format.

AAC (Advanced Audio Coding) compresses audio intelligently, reducing file sizes by 80-90% while preserving quality that most listeners cannot distinguish from the original. In our testing, a 42MB AIFF file converted to AAC at 256kbps produced a 7MB file with virtually identical sound quality.

How to Convert AIFF to AAC

  1. Upload your AIFF file - Drag and drop or click to select your audio file
  2. Select AAC as output - Choose AAC from the available audio formats
  3. Download your file - Get your compressed AAC ready for any device

The entire process happens in your browser. No software installation, no account creation, no waiting.

AIFF vs AAC: Key Differences

AIFF (Audio Interchange File Format) was developed by Apple in 1988 for professional audio storage. It stores audio uncompressed, preserving every detail of the original recording.

AAC (Advanced Audio Coding) was designed as the successor to MP3, offering better sound quality at equivalent bitrates. Apple adopted AAC as the standard format for iTunes and iOS devices.

  • File size - AAC files are 5-10x smaller than AIFF at equivalent perceived quality
  • Compatibility - AAC plays on virtually all modern devices; AIFF support is limited
  • Quality - AIFF is technically lossless; AAC is lossy but highly efficient
  • Use case - AIFF for archival and editing; AAC for distribution and playback

When to Use AAC

Mobile Music Libraries

Store more songs on your iPhone, iPad, or Android device. AAC at 256kbps delivers excellent quality while using a fraction of the storage space.

Podcast Distribution

AAC is the preferred format for podcast hosting. It offers better compression than MP3 at equivalent quality, keeping hosting costs and download times reasonable.

Streaming Uploads

Many streaming services accept AAC directly or will convert to it. Starting with AAC avoids double compression artifacts.

Quality Considerations

AAC is a lossy format, meaning some audio data is discarded during compression. However, AAC uses advanced psychoacoustic models to remove only frequencies most listeners cannot perceive.

For music distribution, 256kbps AAC is generally considered transparent - indistinguishable from the source in blind listening tests. For voice content like podcasts or audiobooks, 128kbps produces excellent results.

If you need to preserve the original quality for future editing, consider converting AIFF to FLAC instead. FLAC offers lossless compression, reducing file size by about 50% without discarding any audio data.

Works on Any Device

Our converter runs entirely in your browser:

  • Windows, Mac, Linux, Chromebook
  • Chrome, Firefox, Safari, Edge
  • iPhone, iPad, Android tablets and phones

No plugins, no downloads, no registration required.

Pro Tip

If you're converting music from a recording session, convert at 256kbps AAC for distribution but keep the original AIFF files. Storage is cheap - re-recording is expensive.

Common Mistake

Converting AIFF to AAC and then deleting the original. AAC compression is permanent. Always archive your uncompressed source files before converting.

Best For

Musicians and podcasters who need to distribute professional recordings in a format that plays everywhere while minimizing file sizes and bandwidth costs.

Not Recommended

Don't use AAC if you plan to edit the audio further - work with AIFF or WAV during editing, then convert to AAC only as the final distribution step.

Frequently Asked Questions

AAC is a lossy format, so technically yes. However, at 256kbps, the quality loss is imperceptible to most listeners in blind tests. The compression algorithm removes frequencies human ears struggle to detect.

256kbps is ideal for music - it provides transparent quality while significantly reducing file size. For podcasts and voice content, 128kbps works well. Lower bitrates like 96kbps are suitable for speech-only content.

You can convert the file format, but you cannot recover the audio data discarded during AAC compression. Once converted to AAC, the quality loss is permanent. Always keep your original AIFF files as archives.

Yes. AAC delivers better audio quality than MP3 at the same bitrate. A 128kbps AAC file sounds roughly equivalent to a 160kbps MP3. AAC also handles high frequencies better than MP3.

Yes. Despite AAC being associated with Apple, Android has supported AAC playback since version 2.0. All modern Android devices play AAC files without issues.

Expect 80-90% reduction in file size. A 40MB AIFF file typically converts to a 4-8MB AAC file depending on the bitrate you choose, while maintaining excellent audio quality.

AIFF is used in professional audio production, music studios, and anywhere uncompressed audio quality matters. It preserves every detail of the original recording but creates large files unsuitable for portable devices.

Yes. Upload multiple AIFF files at once and convert them all to AAC in a single batch. This saves time when converting entire albums or audio collections.

Yes, completely free with no limitations. Convert as many AIFF files to AAC as you need. No account required, no watermarks, no hidden fees.

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