## What are Square Millimeters?

Square millimeters are a unit of area measurement in the metric system, representing the area of a square with sides that are each one millimeter in length. Despite their small size, square millimeters are commonly used in various fields such as engineering, architecture, and manufacturing to measure tiny areas or dimensions with precision. For example, the size of electronic components, microchips, or even the thickness of a sheet of paper can be expressed in square millimeters.

## What are Square Micrometers?

Square micrometers, also known as square microns, are a unit of area in the metric system. One square micrometer is and area equivelent to a square of one micrometer on each side, equal to one millionth of a square meter. This tiny unit of measurement is often used to describe the area of very small objects, such as microorganisms or nanoparticles. To put it into perspective, a single human hair is about 50-100 micrometers in diameter, so a square micrometer is incredibly small in comparison.