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HomeAU vs MIDI
.au
.midi

AU vs MIDI

Compare Sun Audio and MIDI 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

MIDI

MIDI Audio

MIDI Audio (.midi) is a audio file format.

.midiaudio

AU vs MIDI: Feature Comparison

FeatureAUMIDI
Full NameSun AudioMIDI Audio
File Extension.au.midi
Categoryaudioaudio
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use AU vs MIDI

Use AU when you need:

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

Use MIDI when you need:

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

Convert Between Them

AU MIDIMIDI AU
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Learn More About These Formats

AU Converter MIDI Converter

Frequently Asked Questions

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

MIDI Converter

Convert from MIDI

File Tools

Compress, resize, merge

Convert to AU

All sources → AU

Convert to MIDI

All sources → MIDI

Format Statistics

Trends & data 2025

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