Convert acres to square miles (ac to sq mi) and square miles to acres (sq mi to ac) Online Conversion Calculator - Converter

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

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Conversion Chart / Table
 acre to square miles Conversion Chart / Table: square miles to acres Conversion Chart / Table: ac = sq mi 1.0 = 0.00156 2.0 = 0.00313 3.0 = 0.00469 4.0 = 0.00625 5.0 = 0.00781 6.0 = 0.00938 7.0 = 0.01094 8.0 = 0.01250 9.0 = 0.01406 acre = square miles 10 = 0.01563 20 = 0.03125 30 = 0.04688 40 = 0.06250 50 = 0.07813 100 = 0.15625 500 = 0.78125 1000 = 1.56250 5000 = 7.81250 sq mi = ac 1.0 = 640 2.0 = 1280 3.0 = 1920 4.0 = 2560 5.0 = 3200 6.0 = 3840 7.0 = 4480 8.0 = 5120 9.0 = 5760 square miles = acres 10 = 6400 20 = 12800 30 = 19200 40 = 25600 50 = 32000 100 = 64000 500 = 320000 1000 = 640000 5000 = 3200000

The acre (symbol or abbreviation: ac. or a., plural form: acres) is a unit of area used in several different systems, including Imperial units, English units and United States customary units. One acre = 0.0015625 square miles (mi2) = 4046.85642 square meters (m2)= 0.00404685642 square kilometers = 43560 square feet = 0.404685642 hectares = 4840 square yards = 6272640 square inches.