Convert Square Meter (m²) to Square Mil (mil²) instantly.
About these units
Square Meter (m²)
The square meter is the SI unit of area and represents the area of a square with sides exactly one meter in length. It is used universally across science, engineering, architecture, real estate, agriculture, and virtually every discipline that deals with two-dimensional space. Because it is derived directly from the meter, it connects seamlessly to other SI units for volume (m³), density (kg/m³), and pressure (Pa = N/m²). In practical contexts, square meters are used to describe the size of rooms, building floor plans, land plots, insulation coverage, and materials such as flooring and roofing. Its intuitive scale makes it ideal for medium-sized spaces. Smaller areas (such as mechanical components) use cm² or mm², while larger geographical spaces use hectares or square kilometers. The square meter's universality and coherence with the metric system make it one of the most important area units in global use.
Square Mil (mil²)
A square mil equals the area of a square one mil (0.001 inch) on each side, producing an area of one-millionth of a square inch. This tiny unit appears in microfabrication, thin-film manufacturing, and fine electronic component design. Engineers rely on mils and mil² for PCB trace design, wire bonding pads, and micro-mechanical parts. Despite modern efforts to shift toward metric units, mils remain deeply embedded in American electronics manufacturing due to legacy tooling and engineering standards.