Area units calculator & converter tool
Acre Conversions Table
Equivalent of 18 Acre: |
72843.528054875 m2 (Square meter) |
728435280.54875 cm2 (Square centimeter) |
7284352.8054875 dm2 (Square decimeter) |
72843528054.875 mm2 (Square milimeter) |
0.072843528054875 km2 (Square Kilometer) |
7.2843528054875 Hectare |
728.43528054875 Are |
72.843528054875 Decare |
72843.528054875 Centiare |
21.307096173691 Arpent |
72843528.054875 Barn |
784080.45162987 Square feet |
2880.0072843528 Square perche |
0.028124886181987 Square mil |
87120.131118351 Square yard |
112907805.57549 Square inch |
0.00078161105602881 Canton |
0.11247040731673 Homestead |
71.998543129439 Rood |
Acre / Hectare Units Definition
Acre
The acre (/ˈeɪkər/ AY-kər) is a unit of land area used in the British imperial and the United States customary systems. It is traditionally defined as the area of one chain by one furlong (66 by 660 feet), which is exactly equal to 10 square chains, 1⁄640 of a square mile, 4,840 square yards, or 43,560 square feet, and approximately 4,047 m2, or about 40% of a hectare. Based upon the international yard and pound agreement of 1959, an acre may be declared as exactly 4,046.8564224 square metres. The acre is sometimes abbreviated ac but is usually spelled out as the word "acre".
Hectare
hectare, unit of area in the metric system equal to 100 ares, or 10,000 square meters, and the equivalent of 2.471 acres in the British imperial system and the customary measurement of the United States. The term is derived from the Latin area and hect, an irregular contraction of the Greek word percent. Although the are is the primary metric unit of land measurement, the hectare is more commonly used in practice. The hectare is, by definition, equal to one djerib in Turkey, one jerib in Iran, one gong qing in mainland China, one manzana in Argentina and one bunder in the Netherlands.