1.5М+ users already subscribed to our newsletter
AU Converter
Add your file.
Choose the output format.
Click Convert.
Available translations:
You can also convert your files with our powerful desktop app.
Convert to
Convert AU files online for free
With this online AU audio converter, you can easily change the format of your audio in a minute while preserving the sound quality – just transfer the files to the changer and start converting. If you want to have an application with a wider variety of features or you need to convert files of big size, try out the desktop version of this AU converter on Mac and Windows.
What is AU?
Full name
Au File Format
Format type
Audio
Developed by
Sun Microsystems
Description
What is AU? AU is short for “audio”, which means that this file type was created to store sound. It is not a very common format; it is primarily used on Unix systems, which are not widely themselves. Still, playback of AU files on Windows or Mac is also possible; several programs are able to open these audio files. Below, you’ll find information on how to play AUs.
File extension
.au
Technical details
The AU format specification has three main parts: a header, an annotation, and the main block that contains audio data. This data can be encoded by μ-law, PCM, or A-law algorithms. Aside from the programs listed below, you can also use Java apps to play AU files.
Associated programs
Windows Media Player, QuickTime, VLC, and others
Popular AU conversions
Join for how-to guides, speсial offers, and app tips!