Simply upload your file using the converter above, select AU as the output format, and click convert. The conversion happens instantly in your browser — no uploads needed.
What file formats can be converted to AU?
You can convert 20+ formats to AU, including MP3, WAV, FLAC, AAC, OGG and more. Browse the full list of supported source formats above.
Is converting to AU free?
Yes, Convert999 is 100% free with no limits. Convert as many files to AU as you need — no registration, no watermarks, no hidden fees.
Is my data safe when converting to AU?
Absolutely. All conversions happen locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.