Convert AU to FLAC right in your browser
Free and unlimited, and nothing is uploaded: it all runs in your own browser. Open Audio Converter
What changes when you convert AU to FLAC
- Both formats are lossless: every pixel (and every sample) survives the trip.
How to convert AU to FLAC
- Add your AU file — drag it onto the page or choose it. It stays on your device.
- Pick FLAC as the output format.
- Press convert and download the result — individually or as one ZIP.
Questions
How do I convert AU to FLAC for free?
Add your AU file on this site, choose FLAC, and press convert. The whole conversion runs in your own browser — nothing is uploaded — and the FLAC file downloads straight from your device.
Will converting AU to FLAC lose quality?
Both formats are lossless: every pixel (and every sample) survives the trip.
Does FLAC keep everything AU supports?
Yes within the format’s own limits — pixels, timing and structure survive the conversion.