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 the square kilometer value by 0.386102159 or divide by 2.58998811.
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) is a metric system area unit. 1 Square kilometer is equal to 0.386102159 square mile. The abbreviation is "km2".
Square mile is an imperial and US Customary area unit. 1 Square mile is equal to 2.58998811 square kilometers. The abbreviation is "mi2".