Square miles to square kilometers (mi2 to km2) area units conversion factor is 2.59. To find out how many square kilometers in square miles, multiply by the conversion factor or use the converter.
1 Square Mile = 2.589 988 11 Square Kilometers
There are about 2.59 square kilometers in a square mile, because one mile is 1.60934 kilometers and the area of a square is calculated by multiplying a side by itself, that makes 1.60934 * 1.60934 = 2.59 square kilometers in a square mile.
For example, to find out how many sq. kilometers there are in a square mile and a half, as a formula to convert from sq. mile to sq. kilometers, multiply the sq. mile value by 2.59, that makes 1.5 mi2 * 2.59 = 3.885 sq. kilometers in 1.5 sq. mile.
Square mile is an imperial and US customary area unit and defined as the area of a square with sides 1 mile in length. 1 square mile equals to 2.59 sq. kilometers, 640 acres and 259 hectares. The abbreviation is "mi2".
Square kilometer (kilometre in SI spelling) is a metric system area unit and defined as the area of a square with sides 1 kilometer in length. 1 square kilometer equals to 0.386 sq. mile, 247.1 acres and 100 hectares. The abbreviation is "km2".