Convert AU to AIFF

Convert your AU files to AIFF format for free. Drag and drop your file or click to select it.

Source format(.au, .snd)

Target format(.mp3)

Accepted files :.au.snd

Drop your files here

or click to select

Max 25 MB · AU only

Why convert AU to AIFF?

Fast

Your file is converted in under 30 seconds in our cloud.

Secure

Files are automatically deleted after 1 hour.

Quality preserved

Maximum quality preserved during conversion.

About the AU format

AU — Sun Microsystems Audio Format

AU is a simple audio format developed by Sun Microsystems and used in Unix/Linux environments. It supports multiple audio encodings and was commonly used in Java applications and Unix systems.

Common uses

Legacy Unix/Linux audio files
Java audio applications
System sounds
Old internet audio clips

About the AIFF format

AIFF — Audio Interchange File Format

AIFF is Apple's professional uncompressed audio format, the macOS equivalent of WAV. Used extensively in professional audio production on Mac, it stores audio at full quality without any compression.

Common uses

Professional Mac audio production
Logic Pro and GarageBand projects
Broadcast and mastering
Apple ecosystem audio archiving

Related conversions

Other conversions available for AU and AIFF files

AIFF to AUReverse conversion AU to MP3From AU too MP3 to AIFFTo AIFF too AU to WAVFrom AU too WAV to AIFFTo AIFF too AU to OGGFrom AU too MP4 to AIFFTo AIFF too AU to JARFrom AU too

See all AU conversions

Frequently asked questions

Is the conversion free?

Yes, basic conversion is completely free. For large volumes, check out our paid plans.

What is the maximum file size?

Free accounts can convert files up to 25 MB. Pro accounts up to 100 MB.

How long are my files kept?

Files are automatically deleted after 1 hour on the free plan, 24 hours on Pro.

What formats are supported?

We support over 200 source and target formats. See our complete formats page.