AU Converter — Free Online
Convert Sun Microsystems Audio files to and from other formats. Fast, free, no registration required.
Secure Transfer
HTTPS encrypted uploads
Privacy First
Files auto-deleted after processing
No Registration
Start converting instantly
Works Everywhere
Any browser, any device
Need the words, not just the audio?
Turn this audio into accurate text with our free AI transcriber — get a clean transcript with timestamps and speaker labels.
How to Convert
Upload your AU file by dragging it into the upload area or clicking to browse.
Select the output format you want to convert to (or from) AU.
Click Convert and download your converted file in seconds.
Convert to AU
Convert from AU
What is AU?
AU is an audio format created by Sun Microsystems. It's one of the oldest digital audio formats, commonly used on Unix and Java platforms.
Format Details
- Full Name
- Sun Microsystems Audio
- Extension
- .au
Key Features
- Unix standard
- Java audio
- Simple format
- Legacy support