AU Converter
Convert files to and from au online
AU
Sun Microsystems AU Files
AU is a file extension for a sound file format belonging to Sun, NeXT and DEC and used in UNIX. The AU file format is also known as the Sparc-audio or u-law fomat. AU files contain three parts: the audio data and text for a header (containing 24 bytes) and an annotation block.
Convert Between All Audio Formats
Our audio converter supports over a dozen popular audio formats including MP3, WAV, WMA, M4A, FLAC, AAC and more.
Lightning Fast Audio Conversion
Convert your audio files super fast. Our hyper-efficient encoding and decoding algorithms give you results in seconds.
Cloud-Based for Anywhere Access
As a cloud-based platform, our audio converter can be used on any device just by visiting our site. No downloads required.
Advanced Audio Customization
Tweak audio settings like bitrate, sample rate, channels, and metadata to customize your converted audio files.
Security guaranteed
Your audio files are safe with us. We use 256-bit SSL encryption and strict security measures to guarantee privacy.
Use Our Audio Converter on Any Device
Our responsive audio conversion platform works seamlessly on desktop, laptop, tablet and mobile devices. Convert audio on the go.
Supported Conversions
| Convert from AU | Conversions |
| 1 | au to aac |
| 2 | au to aiff |
| 3 | au to flac |
| 4 | au to m4a |
| 5 | au to mp3 |
| 6 | au to wav |
| 7 | au to wma |
| Convert to AU | Conversions |