AU to MP3 Converter

Select files for conversion or just drag and drop them to the upload area

How to convert AU files to MP3 online?

Step 1.

Upload AU-file

Click "Choose File" button to select a au file on your computer. AU file size can be up to 50 Mb.
Step 2.

Convert AU to MP3

Click "Convert" button to start conversion.
Step 3.

Download your MP3

When the conversion process is complete, you can download the MP3 file.

Information about AU and MP3 file formats

Name AU MP3
Full name Sun Microsystems AU files MP3 - MPEG-1 or MPEG-2 Audio Layer III
File extension .au .mp3
MIME type audio/basic audio/mpeg, audio/MPA, audio/mpa-robust
Developed by Sun Microsystems Fraunhofer Institute
Type of format Digital audio
Description MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio which uses a form of lossy data compression. It is a common audio format for consumer audio streaming or storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players.
Technical details The use of lossy compression is designed to greatly reduce the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio. An MP3 file that is created using the setting of 128 kbit/s will result in a file that is about 1/11 the size of the CD file created from the original audio source.
File conversion AU conversion MP3 conversion
Associated programs Nullsoft Winamp, Apple QuickTime Player, Microsoft Windows Media Player, RealNetworks RealPlayer Cloud, Adobe Audition CC VLC media player, MPlayer, Winamp, foobar2000.
Wiki https://en.wikipedia.org/wiki/Au_file_format https://en.wikipedia.org/wiki/MP3