How to convert AU to MP3
- 1
Add your AU files
Drag and drop AU files onto the converter, paste them, or click to browse. You can add several at once.
- 2
Choose MP3
MP3 is already selected. Open Options if you want to change quality, size or metadata.
- 3
Convert
Click Convert. Your files are converted right in your browser in seconds.
- 4
Download your MP3
Download each MP3 file, or everything at once as a ZIP.
AU vs MP3
From
AU · Sun Audio
AU is a simple audio format introduced by Sun Microsystems, common on early Unix systems and Java.
- Type
- Audio
- Extension
- .au
- MIME
- audio/basic
- Best for
- legacy Unix and Java applications
Legacy format
All AU conversions →To
MP3 · MPEG Audio Layer III
MP3 is the most compatible audio format in the world. Its lossy compression keeps music small enough to share while sounding close to CD quality.
- Type
- Audio
- Extension
- .mp3
- MIME
- audio/mpeg
- Best for
- music libraries, podcasts and audio for any device
Lossy compression
All MP3 conversions →Need it the other way around? Convert MP3 to AU.
Related conversions
- MP3 to AU
- MP4 to MP3
- AU to WAV
- WAV to MP3
- AU to M4A
- MOV to MP3
- AU to FLAC
- M4A to MP3
- AU to AAC
- WebM to MP3
- AU to OGG
- FLAC to MP3
Convert AU to other formats
AU to MP3: frequently asked questions
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