nm²

square nanometer

Areaexact by definition

The square nanometre is 10⁻¹⁸ square metres, an exact decimal prefix. It is the unit of molecular footprint: the cross-sectional area a surfactant occupies at an interface, the area per lipid in a membrane, and the specific surface areas that come out of BET adsorption measurements.

1 nm² 1.0000000e-18 m²