Convert AU to FLAC Online — Free
Fast, free AU to FLAC converter. No registration required.
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How to Convert
Upload your .au file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .flac file when it's ready.
What is AU?
AU is an audio format created by Sun Microsystems. It's one of the oldest digital audio formats, commonly used on Unix and Java platforms.
Format Details
- Full Name
- Sun Microsystems Audio
- Extension
- .au
Key Features
- Unix standard
- Java audio
- Simple format
- Legacy support
What is FLAC?
FLAC is an open-source lossless audio codec. It compresses audio without any quality loss, making it popular among audiophiles.
Format Details
- Full Name
- Free Lossless Audio Codec
- Extension
- .flac
Key Features
- Lossless compression
- Open source
- Audiophile quality
- Metadata support
AU vs FLAC
| Feature | AU | FLAC |
|---|---|---|
| Full Name | Sun Microsystems Audio | Free Lossless Audio Codec |
| Extension | .au | .flac |
| Best For | Unix standard | Lossless compression |