Convert square miles to hectars (sq mi to ha) and hectars to square miles (ha to sq mi) Online Conversion Calculator - Converter

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

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Conversion Chart / Table
 square mile to hectars Conversion Chart / Table: hectars to square miles Conversion Chart / Table: sq mi = ha 1.0 = 258.99881 2.0 = 517.99762 3.0 = 776.99643 4.0 = 1035.99524 5.0 = 1294.99405 6.0 = 1553.99287 7.0 = 1812.99168 8.0 = 2071.99049 9.0 = 2330.9893 square mile = hectars 10 = 2589.98811 20 = 5179.97622 30 = 7769.96433 40 = 10359.95244 50 = 12949.94055 100 = 25899.88110 500 = 129499.4055 1000 = 258998.811 5000 = 1294994.055 ha = sq mi 1.0 = 0.00386 2.0 = 0.00772 3.0 = 0.01158 4.0 = 0.01544 5.0 = 0.01931 6.0 = 0.02317 7.0 = 0.02703 8.0 = 0.03089 9.0 = 0.03475 hectars = square miles 10 = 0.03861 20 = 0.07722 30 = 0.11583 40 = 0.15444 50 = 0.19305 100 = 0.38610 500 = 1.93051 1000 = 3.86102 5000 = 19.30511

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 = 640 hectars (ha.) = 2589988.110336 square meters (m2)= 2.589988110336 square kilometers = 27,878,400 square feet = 258.9988110336 hectares = 3,097,600 square yards = 4,014,489,600 square inches.