Square Nanometer [nm²]
A square nanometer (nm²) is a unit of area equal to a square with sides 1 nanometer long (1 nm = 1 billionth of a meter, or 10⁻⁹ m).
It’s used to measure extremely tiny areas, like the surface of molecules or nanomaterials.
1 nm² = 1 × 10⁻¹⁸ m².
Square Meter [m²]
A square meter (m²) is the SI unit of area. It represents the area of a square with sides that are 1 meter long. Square meters are commonly used to measure spaces like rooms, land, and buildings. For example, a room that is 5 meters long and 4 meters wide has an area of 20 m² (5 × 4 = 20).