in²(square inch)

A square inch (in²) is a unit of area in the field of area measurement in the Imperial and US customary systems. It represents the area enclosed by a square with each side measuring one inch in length. Essentially, it's a way to quantify a two-dimensional space, particularly in terms of surfaces or regions, using inches as the base unit for length and width measurements. This unit is commonly used to measure the size of small surfaces or objects, such as the surface area of a smartphone screen or a piece of fabric, and is predominantly used in the United States and countries that follow the Imperial system of measurements.

µm²(square micrometre)

A square micrometre (µm²) is a unit of area in the metric system, commonly used to measure very small or microscopic areas. It represents a square with sides equal to one micrometre (1 µm) in length. A micrometre is one-millionth (1/1000000) of a meter or 0.001 millimetres.

In the field of area measurement, µm² is particularly useful for expressing the sizes of tiny objects or surfaces, such as in biology or material science, where dimensions of cells, bacteria, or minute particles need to be measured and compared.