A square micrometer (often abbreviated as μm²) is a unit of area in the International System of Units (SI). It represents a square with sides that each measure 1 micrometer (μm) in length.
One square micrometer is equal to 1.0 × 10^-12 square meters (m²) because there are 1,000,000 micrometers in a meter, and when you square that length, you get 1.0 × 10^-12 square meters.
To visualize the size of a square micrometer, you can think of an extremely tiny square with sides that are each 1 micrometer long. It is an exceedingly small unit of area and is often used in scientific and technical contexts when dealing with very small scales, such as in microscopy and nanotechnology.