Area

precision

value	unit
	cm²	i square centimeter
	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	i are
	ha	i hectare
	km²	i square kilometer Common metric unit of area
	inch²	i square inch Traditional unit of area. 1 in² equals exactly 6.4516 cm² or 645.16 mm².
	ft²	i square foot
	yard²	i square yard Traditional unit of area. 1 yd² equals 9 ft², 1296 in², or exactly 0.836 127 36 m².
	sq	i square Traditional unit of area. One square equals 100 feet², 11.111 yard², or about 9.290 meter².
	rd²	i square rod
	rood	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.
	ac or A	i acre Unit of area used for measuring real estate in English-speaking 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
	mile² (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 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.