Appendix 3

Common Conversion

Factors

AREA

FROM TO MULTIPLY BY

acres (ac) hectares (ha) 0.4047

acres (ac) square meters (m^2 ) 4047

hectares (ha) square meters (m^2 ) 10000

hectares (ha) acres (ac) 2.471

perches (p) square meters (m^2 ) 25.2929

roods (rd) square meters (m^2 ) 1011.7

squares square meters (m^2 ) 9.2903

square centimeters (cm^2 ) square inches (in^2 ) 0.155

square feet (ft^2 ) square meters (m^2 ) 0.0929

square inches (in^2 ) square meters (m^2 ) 0.00064516

square inches (in^2 ) square millimeters (mm^2 ) 645.16

square inches (in^2 ) square centimeters (cm^2 ) 6.4516

square meters (m^2 ) square yards (yd^2 ) 1.196

square meters (m^2 ) square feet (ft^2 ) 10.76

square meters (m^2 ) square inches (in^2 ) 1550

square meters (m^2 ) acres (ac) 0.000247

square meters (m^2 ) roods (rd) 0.000988

square meters (m^2 ) perches (p) 0.0395

square meters (m^2 ) hectares (ha) 0.0001

square meters (m^2 ) squares 0.1076

square millimeters (mm^2 ) square inches (in^2 ) 0.00155

square yards (yd^2 ) square meters (m^2 ) 0.8361

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