VanUnits is the SI units system originally underpinning Stick. Stick has implemented a new experimental unit system, so the prior system, which remains a very competent and useful system, is being spun-off as VanUnits, named after the primary designer Peter Vanbroekhoven.

The components included are the base unit system, the currency system (which needs an online backend to function), and a set of scientific constants utilizing the units.