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HomeAIFF vs AU
.aiff
.au

AIFF vs AU

Compare Audio Interchange File Format and Sun Audio formats — understand the key differences and when to use each

Format Overview

AIFF

Audio Interchange File Format

Audio Interchange File Format (.aiff) is a audio file format.

.aiffaudio

AU

Sun Audio

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

.auaudio

AIFF vs AU: Feature Comparison

FeatureAIFFAU
Full NameAudio Interchange File FormatSun Audio
File Extension.aiff.au
Categoryaudioaudio
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use AIFF vs AU

Use AIFF when you need:

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

Use AU when you need:

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

Convert Between Them

AIFF AUAU AIFF
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

AIFF Converter AU Converter

Frequently Asked Questions

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

AIFF Converter

Convert from AIFF

AU Converter

Convert from AU

File Tools

Compress, resize, merge

Convert to AIFF

All sources → AIFF

Convert to AU

All sources → AU

Format Statistics

Trends & data 2025

More Format Comparisons

JPGvsPNGPNGvsWEBPJPGvsWEBPSVGvsPNGHEICvsJPGBMPvsJPGTIFFvsJPGGIFvsPNG