MP3 to AU Converter — Free Online

Free online MP3 to AU converter — quickly transform your audio files without registration or software installation. Our service lets you convert mp3 to au in just a few clicks. Conversion happens right in your browser — files are never uploaded to a server and stay on your device. AU is a classic Unix/Sun format. Widely supported in scientific and professional software. Try our mp3 to au converter right now!

🔄 How MP3 to AU Converter Works

Our free mp3 converter quickly produces AU 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.

MP3 to AU online — no software installation. Open the site on any device with a browser and start converting now.

🎯 Problems This Converter Solves

Issues playing MP3?

Convert to universal AU format for better compatibility.

💡 Common Uses for AU

📁 Convert to AU format

🔄 Change audio format

📱 Device compatibility

💾 Optimize file size

✨ 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

MP3 Compact format

Most popular format. Supported by all devices.

AU High quality

Sun Audio. Classic Unix format for software.

❓ Frequently Asked Questions

How can I transform MP3 to AU?

Open the converter page, add your MP3 file, select AU, and click the convert button. Download when ready.

Is the MP3 to AU converter free?

Absolutely free! Convert as many files as you want without registration or payment.

What quality can I expect after MP3 to AU conversion?

Original quality is preserved but not improved. Lossless container is useful for further editing without additional losses.

How many MP3 files can I process at once?

Up to 10 files per session. All processed in parallel in your browser.

What size files can I convert?

Up to 100 megabytes. Browser conversion doesn't upload files to server — fully private.

Is MP3 to AU conversion secure?

Completely secure! Processing happens in browser, your MP3 files are never transmitted anywhere.

📝 How to Convert MP3 to AU

1

Upload File

Drag & drop MP3 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 AU files