Square Miles to Square Kilometers - Convert sq mi to square kilometers

Square Miles (sq mi) Conversion

A square mile is a traditional unit of area in the imperial and Us customary systems, which is equal to the area of a square with one-mile sides. One square mile is 4,014,489,600 square inches, 2.589988 square kilometers, or 640 acres.

Square Kilometers Conversion

A square kilometer is an SI unit of area or surface area multiple of the square meter. One square kilometer is equivalent to 100 hectares, 1,000,000 square meters or 0.3861 square miles.