AU to FLAC Converter — Free Online

Free online AU to FLAC converter — quickly transform your audio files without registration or software installation. Our service lets you convert au to flac in just a few clicks. Conversion happens right in your browser — files are never uploaded to a server and stay on your device. FLAC preserves 100% of original audio quality while compressing to 60% of WAV size. The gold standard for audiophiles. Try our au to flac converter right now!

🔄 How AU to FLAC Converter Works

Our free au converter quickly produces FLAC files. Upload source files, choose settings, and click "Convert".

Batch conversion saves time — process multiple files in one session. Flexible bitrate settings help balance quality and size.

AU to FLAC online — no software installation. Open the site on any device with a browser and start converting now.

🎯 Problems This Converter Solves

Device can't play AU?

Some players don't support AU. Conversion will solve the problem.

Need a different lossless format?

Different software supports different formats. FLAC works with your software.

💡 Common Uses for FLAC

🎵 Lossless audio archiving

🎛️ Professional audio processing

📀 Create master album copy

🔊 Hi-Fi system playback

✨ Our Converter Advantages

⚡ Instant Conversion

Audio file conversion takes just seconds

📦 Multiple Files

Convert up to 10 files at once with a single click

📱 Any Device

Works on smartphones, tablets, and computers

🔒 Data Protection

Files are removed immediately after download

⚙️ Custom Options

Control bitrate and sample rate

💰 Zero Cost

No hidden fees or subscriptions

📊 Format Comparison

AU High quality

Sun Audio. Classic Unix format for software.

FLAC High quality

Lossless compression. Full quality preservation.

❓ Frequently Asked Questions

How to convert AU to FLAC?

Upload your AU file, select FLAC as output format, and click Convert. Your file will be ready in seconds.

Is AU to FLAC conversion free?

Yes, conversion is completely free. No registration required, no hidden fees.

Does converting AU to FLAC affect quality?

Yes, converting between lossless formats preserves full quality.

Can I convert multiple AU files at once?

Yes, our converter supports batch processing of up to 10 files at once right in your browser.

What's the maximum file size?

For browser processing — up to 100 MB per file. Files never leave your device.

Where does conversion happen?

AU to FLAC conversion happens right in your browser. Files are never uploaded to a server — maximum privacy.

📝 How to Convert AU to FLAC

1

Upload File

Drag & drop AU files or click "Choose Files"

2

Adjust Settings

Choose quality, bitrate and other options

3

Convert

Click "Convert" and wait for processing

4

Download Result

Download your FLAC files