Area

unit name	symbol	SI equiv.
square centimeter	cm²	1e-04 m²
square meter	m²	1 m²	i square meter SI unit of area, equal to 10⁴ square centimeters, approximately 10.763 91 feet², or approximately 1.195 990 yard²
are	are	1e+02 m²
hectare	ha	1e+04 m²
square kilometer	km²	1e+06 m²	i square kilometer Common metric unit of area
square inch	inch²	6.4516e-04 m²	i square inch Traditional unit of area. 1 in² equals exactly 6.4516 cm² or 645.16 mm².
square foot	ft²	9.2903e-02 m²
square yard	yard²	8.36127e-01 m²	i square yard Traditional unit of area. 1 yd² equals 9 ft², 1296 in², or exactly 0.836 127 36 m².
square	sq	9.2903 m²	i square Traditional unit of area. One square equals 100 feet², 11.111 yard², or about 9.290 meter².
square rod	rd²	2.52929e+01 m²
rood	rood	1.01171e+03 m²	i rood Traditional unit of area used to measure land. A rood is equal to 40 rod², 1210 yard², or 10 890 feet², 1011.714 meter² or exactly 1/4 acre.
acre	ac or A	4.04686e+03 m²	i acre Unit of area used for measuring real estate in English-speaking countries.
homestead	homestead	6.47497e+05 m²	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
square mile	mile² (int)	2.58999e+06 m²
section	sec	2.58999e+06 m²	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.
township	twp	9.32396e+07 m²	i township Traditional unit of area in the U. S., equal to 36 sections or the area of a 6 mile² on a side (about 93.24 kilometer²). 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.