Free online AU to OGG converter

AU is an audio file format originally associated with Sun Microsystems and early Unix systems. It often stores uncompressed or lightly compressed sound data and is commonly used for simple audio clips. OGG is a modern container format most often used with the Vorbis or Opus audio codecs, offering efficient compression and good sound quality at smaller file sizes.

Why convert au to ogg

Converting AU to OGG is useful when you want to reduce file size, improve compatibility with modern players, or prepare audio for web use and streaming. OGG is widely supported in open-source software and many media players, making it a practical choice for distribution.

Best software for au to ogg conversion

Audacity is one of the best choices for this conversion because it is free, reliable, and supports both AU import and OGG export through the appropriate codec support. It also lets you edit audio before saving.

Recommended menu path: File → Import → Audio, then File → Export → Export as OGG.

Another excellent option is FFmpeg, which is ideal for batch conversion and command-line workflows. It is fast, powerful, and supports many audio formats.

How to convert au to ogg

In Audacity, open the AU file, check the audio if needed, and then export it as OGG. If prompted, choose the desired quality settings for the OGG output. In FFmpeg, you can convert directly with a command such as ffmpeg -i input.au output.ogg.

Quality and compatibility tips

OGG Vorbis is a good choice for general audio playback and web delivery. If you need speech-focused compression, Opus may be even better, though it is less commonly used in the classic OGG workflow. For best results, keep the source audio at the highest available quality before conversion.

Summary

AU to OGG conversion is straightforward and helps modernize older audio files. For most users, Audacity is the easiest converter, while FFmpeg is the best option for advanced or batch processing.