# nanometer

> A nanometer (nm) is a unit of length in the International System of Units (SI) equal to one-billionth of a meter ($1 \times 10^{-9}$ meters or 0.000000001 meters).

A nanometer (nm) is a unit of length in the [International System of Units](https://wiki.g15e.com/pages/International%20System%20of%20Units.txt) (SI) equal to one-billionth of a meter ($1 \times 10^{-9}$ meters or 0.000000001 meters).