Acreage

Acre
Comparison of some Imperial and metric units of area
Unit information
Unit system	US customary units
Unit of	Area
Symbol	acre
Unit conversions
1 acre in ...	... is equal to ...
SI units	4,046.9 m2

The acre is a unit of land area used in the imperial and US customary systems. It is defined as the area of 1 chain by 1 furlong (66 by 660 feet), which is exactly equal to  ¹⁄₆₄₀ of a square mile, 43,560 square feet, approximately 4,047 m², or about 40% of a hectare.

The acre is commonly used in Antigua and Barbuda,Australia,American Samoa,the Bahamas,Belize, the British Virgin Islands, the Cayman Islands,Canada,Dominica, the Falkland Islands,Grenada,Ghana, Guam, the Northern Mariana Islands,India, Sri Lanka, Bangladesh, Nepal, Ireland, Jamaica,Montserrat,Myanmar, Pakistan, Samoa,St. Lucia,St. Helena,St. Kitts and Nevis,St. Vincent and the Grenadines,Turks and Caicos, the United Kingdom, the United States and the US Virgin Islands.