1 Acre (A)= 43'560 square feet (ft2)= 4'840 square yards (yd2)

               = 0.405 hectares (ha)= 160 square rods (rd2)

= 4'047 square meters (m2)= 2.4711 acres (ac)

= 4050 square meter (m2)

= 0.004'05 square kilometer (km2)

1 Are (a)= 100 square meters (m2)= 119.6 square yards (yd2)

= 0.025 acre (ac)= 102 (m2)

1 Barn (b)= 10-28 square meters (m2)

1 Hectare (ha)= 10'000 square meters (104 m2)= 100 are (a)

= 2.471 acres (A)= 10 donums (d)

1 Miles (mi)= 160'900 centimeters (cm)= 5280 feet (ft)

= 1.609 Kilometers (km)= 1760 yards (yd)

1 Square Foot (ft2)= 144 square inches (in2)= 144 square inches (in2)

= 929.03 square centimeters (cm2)= 2.2957 x 10-5 Acres (A)

= 3.5870 x 10-8 square miles (m2)= 0.0929 square meters (m2)

= 0.11111 square yards (yd2)

1 Square Centimeter (cm2)

= 1.1960 square yard (yd2)

= 0.1550 square inches (in2)

= 0.001076 square feet (ft2)

= 1 x 10-4 square meters (m2)

= 100 square millimeter (mm2)

1 Square Inche (in2)= 645.1612 square millimeters (mm2)

= 0.00694 square feet (ft2)

= 0.00077 square yards (yd2)

= 6.4516 square centimeter (cm2)

1 Square Kilometer (km2)

= 100 hectares (ha2)= 247.10 acres (A,US)

= 1.1960 x 106 square yards (yd2)= 0.3861 square mile (mi2)

= 1.0764 x 107 square feet(ft2)= 1 x 106 square meters (m2)

1 Square Meter (m2)= 10’000 square centimeter (cm2)

= 10.764 square feet (ft2)

= 1.1959 square Yards (y2)

1 Square Mile (mi2)= 27'878'400 square feet (ft2)= 640 square acres (A2)

= 3'097'600 square yards (yd2)

= 2'589'988.11 square meters (m2)

= 1.2732 circular millimeters (cmm)

1 Square Rod (rd2)= 39'204 square inches (in2)= 272.25 square feet (ft2)

= 30.25 square yards (yds2)= 25.3 square meters (m2)

1 Square Yard (yd2)= 0.836 square meters (m2)= 9 square feet (ft2)