Format hub
AU tools for uploads, compatibility fixes, and everyday file work.
AU Converter online for free. Convert from AU or convert files to AU with 1 useful routes for uploads, compatibility, and everyday file work.
Convert from AU
Convert to AU
AU compatibility checklist
Use it when
legacy Unix audio, old workstation recordings, and archived sound clips.
Check after conversion
Open the output and confirm layout, image quality, audio/video playback, or text readability before replacing the original.
Keep in mind
AU is an older audio format that is commonly converted to MP3, WAV, or FLAC.
Related formats
Frequently asked questions
AU Converter: what can I convert?
AU Converter online for free. Convert from AU or convert files to AU with 1 useful routes for uploads, compatibility, and everyday file work.
Should I keep the original AU file?
Yes. Keep the original file until the converted output opens correctly in the app, website, or device where you plan to use it.
Is this AU converter free?
Yes. You can start from this page, choose a supported route, and convert files online without creating an account.