Convert AU to WMA — usually much smaller files
Free and unlimited, and nothing is uploaded: it all runs in your own browser. Open Audio Converter
What changes when you convert AU to WMA
- AU audio is lossless and WMA audio is lossy: the quality slider decides how much detail is traded for size, and output files are usually far smaller.
- WMA audio encoding exposes a quality control; around 80 is the usual sweet spot.
- Encoded with the WMA v2 encoder for compatibility; anything serious should target AAC/MP3 instead.
How to convert AU to WMA
- Add your AU file — drag it onto the page or choose it. It stays on your device.
- Pick WMA as the output format and set the quality slider.
- Press convert and download the result — individually or as one ZIP.
Questions
How do I convert AU to WMA for free?
Add your AU file on this site, choose WMA, and press convert. The whole conversion runs in your own browser — nothing is uploaded — and the WMA file downloads straight from your device.
Will converting AU to WMA lose quality?
AU audio is lossless and WMA audio is lossy: the quality slider decides how much detail is traded for size, and output files are usually far smaller.
Does WMA keep everything AU supports?
Yes within the format’s own limits — pixels, timing and structure survive the conversion.