Convert square miles to square kilometers (sq mi to sq km) and square kilometers to square miles (sq km to sq mi) Online Conversion Calculator - Converter

This calculator-converter provides conversion of square miles to square kilometers (sq mi to sq km) and backwards square kilometers to square miles (sq km to sq mi).

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Conversion Chart / Table
 square mile to square kilometers Conversion Chart / Table: square kilometers to square miles Conversion Chart / Table: sq mi = sq km 1.0 = 2.58999 2.0 = 5.17998 3.0 = 7.76996 4.0 = 10.35995 5.0 = 12.94994 6.0 = 15.53993 7.0 = 18.12992 8.0 = 20.7199 9.0 = 23.30989 square mile = square kilometers 10 = 25.89988 20 = 51.79976 30 = 77.69964 40 = 103.59952 50 = 129.49941 100 = 258.99881 500 = 1294.99406 1000 = 2589.98811 5000 = 12949.94055 sq km = sq mi 1.0 = 0.38610 2.0 = 0.77220 3.0 = 1.15831 4.0 = 1.54441 5.0 = 1.93051 6.0 = 2.31661 7.0 = 2.70272 8.0 = 3.08882 9.0 = 3.47492 square kilometers = square miles 10 = 3.86102 20 = 7.72204 30 = 11.58306 40 = 15.44409 50 = 19.30511 100 = 38.61022 500 = 193.05108 1000 = 386.10216 5000 = 1930.51079

The square mile (symbol or abbreviation: sq mi. or mi², plural form: square miles) is a unit of area used in several different systems, including Imperial units, English units and United States customary units. One square mile = 2.58998811 square kilometers (sq km., km2) = 2589988.110336 square meters (m2) = 27,878,400 square feet = 258.9988110336 hectares = 3,097,600 square yards = 4,014,489,600 square inches.