AU to OPUS Converter — Free Online

Free online AU to OPUS converter — quickly transform your audio files without registration or software installation. Our service lets you convert au to opus in just a few clicks. Conversion happens right in your browser — files are never uploaded to a server and stay on your device. OPUS is a modern codec with the best quality/size ratio. Standard for VoIP, Discord and WhatsApp. Try our au to opus converter right now!

🔄 How AU to OPUS Converter Works

AU to OPUS conversion is fast and convenient. Drag multiple files to upload area, and our online converter processes them in seconds.

Full control over quality: bitrate, sample rate, channels. Customize au to opus conversion settings to your needs.

Processing runs locally in browser. Your files stay private — we never access your audio. Works on Windows, Mac, Linux, Android and iOS.

🎯 Problems This Converter Solves

Device can't play AU?

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

AU files too large?

Lossless files take lots of space. OPUS will reduce size several times.

Need to share audio?

OPUS is supported by most devices and services.

💡 Common Uses for OPUS

🎮 Game audio

🌐 Website audio

📱 Voice messages

🎧 Podcasts and audiobooks

✨ Our Converter Advantages

⚡ Rapid Conversion

No waiting — results delivered immediately

📦 Bulk Processing

Save time by converting in batches

💻 All Platforms

Windows, Mac, Linux, iOS, Android — everywhere

🔒 Secure Handling

Your data stays private — no storage

🎵 Flexible Settings

Choose quality, bitrate, and other parameters

💰 No Payment

All features available free without an account

📊 Format Comparison

AU High quality

Sun Audio. Classic Unix format for software.

OPUS Compact format

Modern codec. Best for voice and streaming.

❓ Frequently Asked Questions

How to convert AU to OPUS?

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

Is AU to OPUS conversion free?

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

Does converting AU to OPUS affect quality?

Converting from lossless to lossy involves some quality loss, but at high bitrate (320 kbps) the difference is barely noticeable.

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

📝 How to Convert AU to OPUS

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 OPUS files