Hecta acre to acre8/2/2023 ![]() While all modern variants of the acre contain 4,840 square yards, there are alternative definitions of a yard, so the exact size of an acre depends upon the particular yard on which it is based. In many of those where it is not a statute measure, it is still lawful to "use for trade" if given as supplementary information and is not used for land registration. In a few, it continues as a statute measure, although since 2010 not in the UK itself, and not since decades ago in Australia, New Zealand and South Africa. The acre is commonly used in a number of current and former British Commonwealth countries by custom only. ![]() The most common use of the acre is to measure tracts of land. Both the international acre and the US survey acre are in use, but they differ by only four parts per million (see below). The acre is still a statutory measure in the United States. ![]() Traditionally, in the Middle Ages, an acre was conceived of as the area of land that could be ploughed by one man using a team of 8 oxen in one day. The acre is sometimes abbreviated ac but is usually spelled out as the word "acre". Based upon the international yard and pound agreement of 1959, an acre may be declared as exactly 4,046.8564224 square metres. ![]() 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 m 2, or about 40% of a hectare. The acre ( / ˈ eɪ k ər/ AY-kər) is a unit of land area used in the imperial and US customary systems. The entire yellow square is one square mile the dark blue area at right represents 100 acres. Even though it is not an SI unit (just a unit accepted for use with SI) the SI brochure states that the use of the hectare is expected to "continue indefinitely."Īcre to Hectare Conversion Table Acre ġ5 ac = 15 × 0.4046856422 ha = 6.Image comparing the acre (the small pink area at lower left) to other units. The "are" is still used in certain areas when referencing real estate, particularly in India, Indonesia, and a number of European countries.Ĭurrent use: Hectares are primarily used to measure land area around the world. The term hectare is derived from the metric prefix "hecto," denoting a factor of one hundred, and the metric area "are," a metric unit for measuring area that has fallen out of use in SI. History/Origin: The hectare was first introduced in 1795 as part of the metric system. One hectare is equal to 10,000 square meters and is equivalent to approximately 2.471 acres. It is primarily used to measure land area. Hectareĭefinition: A hectare (symbol: ha) is a unit of area that is accepted in the International System of Units (SI). However, area measurements are typically not accurate enough for the difference between the two acre measurements to be detectable. ![]() The United States (US) uses both international as well as US survey acres (~4047 square meters), which vary based on which type of yard is used in the measurement. The most commonly used acre today, the international acre, is based on the international yard, which was defined in 1959.Ĭurrent use: Acres are used in countries including the United States, the UK, Ghana, India, Canada, and others. Before the metric system was adopted, many countries used their own versions of the acre. History/origin: In the Middle Ages, the acre was defined as the area that a yoke (pair) of oxen could typically plow within one day, using a wooden plow. It is defined as the area of 1 chain (66 feet) by 1 furlong (660 feet), which is exactly equal to 1/640 of a square mile, 43,560 square feet, or exactly 4046.8564224 square meters. Definition: An acre (symbol: ac) is a unit of land area used in the imperial and US customary systems. ![]()
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