Convert AAC to OGG — Free Online Converter

AAC (Advanced Audio Coding) was standardized by MPEG in 1997 and became the dominant codec for Apple and streaming platforms. OGG Vorbis, developed by Xiph.org and released in 2000, is an open-source lossy codec that provides comparable quality to AAC without any patent licensing requirements. Converting AAC to OGG is common when targeting open-source platforms, Linux environments, or game engines that prefer the patent-free Vorbis codec.

Vorbis is the default audio codec for many open-source projects, game engines (Unity, Godot, Unreal), and web applications that avoid patent-encumbered formats. Firefox historically supported Vorbis before AAC. Linux distributions ship with Vorbis decoders by default. Spotify uses Vorbis internally for streaming. If your target platform prefers open-source codecs, OGG Vorbis is the standard choice.