About Units

Square kilometer: A square kilometer is a unit of area in the metric system. It is equal to 1,000,000 square meters or approximately 0.3861 square miles. This unit is commonly used to measure large areas such as geographical regions, city extents, or country sizes. One square kilometer is roughly equivalent to 247 acres.

Square centimeter: A square centimeter is a unit of area in the metric system. It is the area of a square with one centimeter on each side. This unit is commonly used in scientific and engineering contexts, particularly when dealing with small areas such as in electronics or materials science.