AU File — Open & Convert .au Online
What Is a .au File?
AU (.au) is a audio file format. Sun Audio File Created by Sun Microsystems, this format is essential for musicians, podcasters, and audio engineers.
How to Open .au Files
Upload your .au file to OpenAnyFile and instantly listen to and convert it in your browser. No software installation required. Works on Windows, macOS, Linux, iPhone, and Android.
Everything About AU Files
Popular AU Conversions
Frequently Asked Questions
What is a .au file?
A .au file is a audio format called AU. Sun Audio File
How do I open a .au file without installing software?
Upload your .au file to OpenAnyFile. Our browser-based tool instantly detects and displays it — no downloads needed.
What program creates .au files?
.au files are typically created by Sun Microsystems.
Can I convert .au to another format?
Yes. OpenAnyFile converts .au to WAV, MP3, FLAC, OGG.
Is it safe to open .au files online?
Yes. OpenAnyFile processes files in a secure, isolated environment. Files are automatically deleted and all transfers use HTTPS.
Can I open .au on my phone?
Yes. OpenAnyFile works on all mobile browsers including iPhone and Android.