 cm^{2}  i square centimeter

 m^{2}  i square meter
 SI unit of area, equal to 10^{4} square centimeters, approximately 10.763 91 feet^{2}, or approximately 1.195 990 yard^{2}

 are  i are

 ha  i hectare

 km^{2}  i square kilometer
 Common metric unit of area

 inch^{2}  i square inch
 Traditional unit of area.
1 in^{2} equals exactly 6.4516 cm^{2} or 645.16 mm^{2}.

 ft^{2}  i square foot

 yard^{2}  i square yard
 Traditional unit of area.
1 yd^{2} equals 9 ft^{2}, 1296 in^{2}, or exactly 0.836 127 36 m^{2}.

 sq  i square
 Traditional unit of area. One square equals 100 feet^{2}, 11.111 yard^{2}, or about 9.290 meter^{2}.

 rd^{2}  i square rod

 rood  i rood
 Traditional unit of area used to measure land. A rood is equal to 40 rod^{2}, 1210 yard^{2}, or 10 890 feet^{2}, 1011.714 meter^{2} or exactly 1/4 acre.

 ac or A  i acre
 Unit of area used for measuring real estate in Englishspeaking countries.

 homestead  i homestead
 Historic unit of area in the United States, equal to 160 acres, 64.75 hectares, 1/4 square mile, or 1/4 section in U.S. government terminology

 mile^{2} (int)  i square mile

 sec  i section
 Traditional unit of area in the U.S., equal to 1 square mile. This unit is used by the U.S. Public Land Survey System, which applies to most of the U.S. except for the original 13 states, Alaska, and Hawaii.

 twp  i township
 Traditional unit of area in the U. S., equal to 36 sections or the area of a 6 mile^{2} on a side (about 93.24 kilometer^{2}). Like the section, this unit is used by the U.S. Public Land Survey System, which applies to most of the U.S. except for the original 13 states, Alaska, and Hawaii.
