> For the complete documentation index, see [llms.txt](https://wiki.havenprotocol.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.havenprotocol.org/overview/atomic-units.md).

# Atomic Units

#### The Basics

Atomic Units refer to the smallest fraction of 1 XHV. One atomic unit is currently 1e-12 XHV (0.000000000001 XHV, or one @piconero). It may be changed in the future.