AU vs OGG — Comparison & Free Converter
Fast, instant AU to OGG conversion. No signup required. Just drop your .au file and get .ogg in seconds.
Batch Settings
About AU to OGG Conversion
AU or OGG — which format should you use? The answer depends on your needs. Here's a quick breakdown.
AU is a widely used file format. It has common platform support. OGG Vorbis is an open-source lossy audio format with excellent quality at low bitrates. It has limited platform support.
So when should you convert AU to OGG? This conversion is ideal when you When you need a OGG file. This conversion helps you convert between formats quickly.
Converting AU to OGG maintains high quality with CocoConvert's optimised encoder settings.
If you've decided OGG is the right choice, CocoConvert makes the conversion effortless. Upload your .au file, pick OGG, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert AU to OGG
- 1
Choose your AU file
Upload your .au file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to OGG
Select .ogg from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large audio files.
- 4
Get your OGG file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert AU to OGG
Your AU file is decoded and re-encoded as OGG.
Your AU file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in OGG format
The converted file is ready for download
Format Comparison
AU
.au file
| Extension | .au |
| MIME Type | audio/basic |
| Category | Audio |
OGG
.ogg file
| Extension | .ogg |
| MIME Type | audio/ogg |
| Category | Audio |
Should You Convert AU to OGG?
When to Convert
- ✓When you need a OGG file
Frequently Asked Questions
Should I use AU or OGG?
It depends on your goal. AU preserves full quality. OGG offers smaller files via lossy compression. Choose based on whether file size or quality matters more for your use case.
Is OGG higher quality than AU?
Not necessarily. Converting AU to OGG maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert AU to OGG on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for AU to OGG?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for AU to OGG?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.