1 square mile equals about
2.59 square kilometers
The square mile (sq mi) is a unit of area in the British/American imperial system used for large territories, while the square kilometer (km²) is the equivalent metric unit. One square mile is exactly equal to 2.589988110336 square kilometers.
To convert a measurement from square miles to square kilometers, simply multiply the value in square miles by 2.5900:
To convert from square kilometers to square miles, perform the inverse operation, multiplying by 0.3861:
Square miles are commonly used in the United States and the United Kingdom to express the area of cities, counties, states, and countries. Square kilometers are the standard used by most other countries for the same purpose. This conversion is frequently needed when comparing geographic, demographic, and statistical data across countries.