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HomeAU vs RA
.au
.ra

AU vs RA

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

Format Overview

AU

Sun Audio

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

.auaudio

RA

RealAudio

RealAudio (.ra) is a audio file format.

.raaudio

AU vs RA: Feature Comparison

FeatureAURA
Full NameSun AudioRealAudio
File Extension.au.ra
Categoryaudioaudio
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use AU vs RA

Use AU when you need:

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

Use RA when you need:

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

Convert Between Them

AU RARA AU
Dateien auswählen

oder Dateien hierher ziehen

Max. Dateigröße: 2 GB

Ihre Dateien werden lokal in Ihrem Browser verarbeitet. Nichts wird auf einen Server hochgeladen.

Learn More About These Formats

AU Converter RA Converter

Frequently Asked Questions

What is the difference between AU and RA?
AU (Sun Audio) and RA (RealAudio) are both audio file formats. AU files use the .au extension while RA uses .ra. They differ in compression, quality, compatibility, and intended use cases.
Can I convert AU to RA for free?
Yes! Convert999 lets you convert AU to RA 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 RA?
It depends on your use case. AU (Sun Audio) may be better for certain workflows, while RA (RealAudio) 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

RA Converter

Convert from RA

File Tools

Compress, resize, merge

Convert to AU

All sources → AU

Convert to RA

All sources → RA

Format Statistics

Trends & data 2025

More Format Comparisons

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