Area
mm2 : square millimeter;
cm2 : square centimeter;
m2 : square meter;
km2 : square kilometer
1km2 = 100 hectares(ha)
To Obtain Multiply By
mm2 cm2
m2
km2
102
106
1012
cm2 mm2
m2
km2
102
104
1010
m2 mm2
cm2
km2
106
104
106
km2 mm2
cm2
m2
1012
1010
106