How to Convert MP3 to AU Online?


Add MP3 file(s) that you want to convert.


Select AU as the output format you want to convert MP3 file(s) to.


Click CONVERT to convert your MP3 file(s).


Click DOWNLOAD to save your converted AU file(s).

Differences Between Our Online and Desktop Converters

online converter

Online Converter

  • Long-time wait
  • Up to 100MB file size
  • Popular formats supported
  • A muximum of 2 files in one conversion
  • Slow conversion speed
fast desktop converter

Faster Desktop Converter

  • 0 second wait
  • No size limits
  • 1000+ formats supported
  • Limitless batch conversion mode integrated
  • 30X faster than any converter

MP3 to AU

Using Online UniConverter (originally, it's easy to convert MP3 files to a variety of other formats.

MP3 转 M4R (MPEG-4 Audio format for Ringtones)

MP3 转 AAC (Advanced Audio Coding)

MP3 转 M4A (Compressed Audio File)

MP3 转 FLAC (Free Lossless Audio Codec)

MP3 转 M4B (MPEG-4 Audio Book File)

MP3 转 AMR (Adaptive Multi Rate)

MP3 转 AAX (Amazon Audible)

MP3 转 AU (Sun Microsystems AU files)

MP3 转 AC3 (AC3 Audio File)