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HomeAU vs WMA
.au
.wma

AU vs WMA

Compare Sun Audio and Windows Media Audio formats — understand the key differences and when to use each

Format Overview

AU

Sun Audio

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

.auaudio

WMA

Windows Media Audio

Windows Media Audio (.wma) is a audio file format.

.wmaaudio

AU vs WMA: Feature Comparison

FeatureAUWMA
Full NameSun AudioWindows Media Audio
File Extension.au.wma
Categoryaudioaudio
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use AU vs WMA

Use AU when you need:

  • •Files in Sun Audio format for maximum compatibility
  • •Industry-standard audio format support
  • •Wide software and platform compatibility

Use WMA when you need:

  • •Files in Windows Media Audio format for specific workflows
  • •Optimized audio format features
  • •Modern format advantages and smaller file sizes

Convert Between Them

AU WMAWMA AU
फ़ाइलें चुनें

या फ़ाइलें यहाँ खींचें और छोड़ें

अधिकतम फ़ाइल आकार: 2GB

आपकी फ़ाइलें आपके ब्राउज़र में स्थानीय रूप से प्रोसेस होती हैं।

Learn More About These Formats

AU Converter WMA Converter

Frequently Asked Questions

What is the difference between AU and WMA?
AU (Sun Audio) and WMA (Windows Media Audio) are both audio file formats. AU files use the .au extension while WMA uses .wma. They differ in compression, quality, compatibility, and intended use cases.
Can I convert AU to WMA for free?
Yes! Convert999 lets you convert AU to WMA completely free, directly in your browser. No file upload to any server, no registration needed — your files stay private on your device.
Which is better, AU or WMA?
It depends on your use case. AU (Sun Audio) may be better for certain workflows, while WMA (Windows Media Audio) excels in others. Consider factors like file size, quality, software compatibility, and your specific needs.
Is it safe to convert files on Convert999?
Absolutely. Convert999 processes all files 100% locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.

AU Converter

Convert from AU

WMA Converter

Convert from WMA

File Tools

Compress, resize, merge

Convert to AU

All sources → AU

Convert to WMA

All sources → WMA

Format Statistics

Trends & data 2025

More Format Comparisons

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