Lightning Converter
Square Millimeter
A square millimeter (mm²) is a very small metric unit of area, defined as the space inside a square that is one millimeter on each side. It is commonly used in engineering, manufacturing, electronics, and medical fields where precise surface measurements matter. Square millimeters allow fine detail without complex decimals.
The metric system ensures that mm² conversions remain straightforward. For example, 100 mm² equals 1 cm², and 1,000,000 mm² equals 1 m². An area converter helps quickly scale from tiny surfaces up to larger areas.
Square Kilometer
A square kilometer (km²) is a large metric unit used to measure wide geographic areas. One km² equals one million square meters, making it perfect for cities, forests, lakes, and regions. It is widely used in maps, environmental studies, and land-use planning.
This scale helps governments, scientists, and researchers describe the size of natural and urban spaces with clarity. Converting km² into acres or square miles provides helpful context across measurement systems.
