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AU to AIFF - Online Audio Converter
Convert AU to AIFF online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert AU to AIFF
Drop AU audio here or click to select
AU
AIFF (PCM 16-bit)
About AU to AIFF
Convert AU to AIFF. AU is Sun's simple container, usually holding 8 kHz telephony audio. AIFF is Apple's IFF-based counterpart to WAV with PCM audio. Metadata support is thinner than WAV's; check tags after conversion..
Why convert AU to AIFF?
- Larger files than lossy shares with AIFF uncompressed quality.
- Keep quality where supported.
- Private, no upload - runs in your browser.
AU vs AIFF
| Codec | PCM 16-bit | PCM 16-bit |
|---|---|---|
| Compression | uncompressed | uncompressed |
| Sample behavior | Full quality kept | Full quality kept |
| Typical use | AU is Sun's simple container, usually holding 8 kHz telephony audio. | AIFF is Apple's IFF-based counterpart to WAV with PCM audio. |
When not to convert AU to AIFF
- Skip AIFF for the smallest share: lossless output stays large, so prefer a lossy target when sending AU files.
- Keep a master copy: repeated exports stack small losses, so archive AU before batch AIFF shares.
Limits
Starting point: AU - AU is Sun's simple container, usually holding 8 kHz telephony audio. Headers are minimal; verify sample rate after conversion. Metadata support is thinner than WAV's; check tags after conversion. Encode AIFF (PCM 16-bit) from AU at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert AU to AIFF?
Drop your AU file onto this page, choose quality and codec settings, then click Convert. The result downloads as AIFF instantly. All processing runs in your browser.
What codec is used for AIFF?
The default codec for AIFF is PCM 16-bit. You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.