Square kilometers to square miles (km2 to mi2) area units conversion factor is 0.386102159. To find out how many square miles in square kilometers, multiply by the conversion factor or use the converter.
1 Square Kilometer = 0.386102159 Square Mile
There are 0.386102159 square miles in a square kilometer, because one kilometer is 0.621371 miles and the area of a square is calculated by multiplying a side by itself, that makes 0.621371 * 0.621371 = 0.3861 square miles in a square kilometer.
For example, to find out how many sq. miles there are in a square kilometer and a half, multiply the sq. kilometer value by 0.386102159, that makes 1.5 km2 * 0.386102159 = 0.58 sq. miles in 1.5 sq. kilometers.
Square kilometer (kilometre in SI spelling) is a metric system area unit and equals to 0.386 sq. miles and 247.105 acres. The abbreviation is "km2".
Square mile is an imperial and US Customary area unit and equals to 2.59 sq. kilometers and 640 acres. The abbreviation is "mi2".