# AU converter

> Convert AU files to MP3, WAV, M4A, FLAC and more. Free, fast and private — most conversions run right in your browser. AU is a simple audio format introduced by Sun Microsystems, common on early Unix systems and Java.

URL: https://www.converterrr.com/au-converter

- Sun Audio (AU), audio format. [Audio converter](https://www.converterrr.com/audio-converter).
- Converts to 18 formats, 17 of them in the browser; 43 formats convert to AU.

## About the AU format

AU is a simple audio format introduced by Sun Microsystems, common on early Unix systems and Java.

|  | AU |
| --- | --- |
| Full name | Sun Audio |
| Type | Audio |
| Extensions | .au |
| MIME type | audio/basic |
| Best for | legacy Unix and Java applications |
| Properties | legacy format |

## Convert AU to… (18)

- [AU to MP3](https://www.converterrr.com/au-to-mp3) (in the browser)
- [AU to WAV](https://www.converterrr.com/au-to-wav) (in the browser)
- [AU to M4A](https://www.converterrr.com/au-to-m4a) (in the browser)
- [AU to FLAC](https://www.converterrr.com/au-to-flac) (in the browser)
- [AU to AAC](https://www.converterrr.com/au-to-aac) (in the browser)
- [AU to OGG](https://www.converterrr.com/au-to-ogg) (in the browser)
- [AU to Opus](https://www.converterrr.com/au-to-opus) (in the browser)
- [AU to WMA](https://www.converterrr.com/au-to-wma) (in the browser)
- [AU to AIFF](https://www.converterrr.com/au-to-aiff) (in the browser)
- [AU to AMR](https://www.converterrr.com/au-to-amr) (cloud)
- [AU to M4B](https://www.converterrr.com/au-to-m4b) (in the browser)
- [AU to AC3](https://www.converterrr.com/au-to-ac3) (in the browser)
- [AU to MP2](https://www.converterrr.com/au-to-mp2) (in the browser)
- [AU to WEBA](https://www.converterrr.com/au-to-weba) (in the browser)
- [AU to OGA](https://www.converterrr.com/au-to-oga) (in the browser)
- [AU to MKA](https://www.converterrr.com/au-to-mka) (in the browser)
- [AU to WV](https://www.converterrr.com/au-to-wv) (in the browser)
- [AU to TTA](https://www.converterrr.com/au-to-tta) (in the browser)

## Convert to AU from… (43)

- [MP3 to AU](https://www.converterrr.com/mp3-to-au) (in the browser)
- [MP4 to AU](https://www.converterrr.com/mp4-to-au) (in the browser)
- [WAV to AU](https://www.converterrr.com/wav-to-au) (in the browser)
- [MOV to AU](https://www.converterrr.com/mov-to-au) (in the browser)
- [M4A to AU](https://www.converterrr.com/m4a-to-au) (in the browser)
- [WebM to AU](https://www.converterrr.com/webm-to-au) (in the browser)
- [FLAC to AU](https://www.converterrr.com/flac-to-au) (in the browser)
- [MKV to AU](https://www.converterrr.com/mkv-to-au) (in the browser)
- [AAC to AU](https://www.converterrr.com/aac-to-au) (in the browser)
- [AVI to AU](https://www.converterrr.com/avi-to-au) (in the browser)
- [OGG to AU](https://www.converterrr.com/ogg-to-au) (in the browser)
- [WMV to AU](https://www.converterrr.com/wmv-to-au) (in the browser)
- [Opus to AU](https://www.converterrr.com/opus-to-au) (in the browser)
- [WMA to AU](https://www.converterrr.com/wma-to-au) (in the browser)
- [FLV to AU](https://www.converterrr.com/flv-to-au) (in the browser)
- [M4V to AU](https://www.converterrr.com/m4v-to-au) (in the browser)
- [MPEG to AU](https://www.converterrr.com/mpeg-to-au) (in the browser)
- [3GP to AU](https://www.converterrr.com/3gp-to-au) (in the browser)
- [AIFF to AU](https://www.converterrr.com/aiff-to-au) (in the browser)
- [AMR to AU](https://www.converterrr.com/amr-to-au) (in the browser)
- [MPG to AU](https://www.converterrr.com/mpg-to-au) (in the browser)
- [TS to AU](https://www.converterrr.com/ts-to-au) (in the browser)
- [M4B to AU](https://www.converterrr.com/m4b-to-au) (in the browser)
- [MTS to AU](https://www.converterrr.com/mts-to-au) (in the browser)
- [VOB to AU](https://www.converterrr.com/vob-to-au) (in the browser)
- [M2TS to AU](https://www.converterrr.com/m2ts-to-au) (in the browser)
- [AC3 to AU](https://www.converterrr.com/ac3-to-au) (in the browser)
- [APE to AU](https://www.converterrr.com/ape-to-au) (in the browser)
- [OGV to AU](https://www.converterrr.com/ogv-to-au) (in the browser)
- [MXF to AU](https://www.converterrr.com/mxf-to-au) (in the browser)
- [DivX to AU](https://www.converterrr.com/divx-to-au) (in the browser)
- [MP2 to AU](https://www.converterrr.com/mp2-to-au) (in the browser)
- [CAF to AU](https://www.converterrr.com/caf-to-au) (in the browser)
- [WEBA to AU](https://www.converterrr.com/weba-to-au) (in the browser)
- [3G2 to AU](https://www.converterrr.com/3g2-to-au) (in the browser)
- [RM to AU](https://www.converterrr.com/rm-to-au) (cloud)
- [RMVB to AU](https://www.converterrr.com/rmvb-to-au) (cloud)
- [OGA to AU](https://www.converterrr.com/oga-to-au) (in the browser)
- [MKA to AU](https://www.converterrr.com/mka-to-au) (in the browser)
- [F4V to AU](https://www.converterrr.com/f4v-to-au) (in the browser)
- [ASF to AU](https://www.converterrr.com/asf-to-au) (in the browser)
- [WV to AU](https://www.converterrr.com/wv-to-au) (in the browser)
- [TTA to AU](https://www.converterrr.com/tta-to-au) (in the browser)

## About the AU format: frequently asked questions

### What is an AU file?

AU is a simple audio format introduced by Sun Microsystems, common on early Unix systems and Java. It's commonly used for legacy Unix and Java applications.

### How do I open an AU file?

If your app can't open AU, convert it to a widely supported format like MP3 with the converter above.

### What can I convert AU to?

18 formats, including MP3, WAV, M4A, FLAC, AAC, OGG.

### What can be converted to AU?

43 formats can be converted to AU, including MP3, MP4, WAV, MOV, M4A, WebM.

### What is the MIME type of AU?

AU files use the MIME type audio/basic and the extension .au.