Convert to AU

Convert compatible files to AU directly in your browser.

  • No uploads Files stay on your device
  • Batch processing Handle multiple files at once
  • 100% private No sign-up, no tracking

Drop files or folders here

You can also drag files into this area

Supported input formats

  • AAC
  • AIF
  • AIFF
  • APE
  • AU
  • DSF
  • FLAC
  • M4A
  • MP3
  • OGA
  • OGG
  • OPUS
  • +3 more

We support 15 formats. All conversion happens in your browser.

View all formats →

How to convert to AU

  1. Add your files (e.g. AAC, AIF, AIFF)
  2. Adjust output settings (optional)
  3. Click \"Convert\"
  4. Download your converted files

About AU

The Au format is Sun Microsystems' 1991 audio container: simple headered PCM and μ-law sound that powered early Unix and Java applets. Learn when to use it and what to choose instead.

Learn more about AU →