Convert to AU

Convert any file to Sun Audio format — free, fast, and private

Audio

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Max file size: 2GB

Your files are processed locally in your browser. Nothing is uploaded to any server.

About AU Format

Sun Audio (.au)

Sun Audio (.au) is a audio file format.

Convert to AU from any format

Choose a source format below to convert to Sun Audio

MP3AU WAVAU FLACAU AACAU OGGAU WMAAU M4AAU AIFFAU AIFAU OPUSAU AMRAU APEAU MIDAU MIDIAU AC3AU DTSAU WVAU CAFAU RAAU VOCAU

Frequently Asked Questions

How do I convert files to AU?

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.

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AU Format

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