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acre

Also known as acres, ac

The acre ( ) 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, of a square mile, 4,840 square yards, or 43,560 square feet, and approximately 4,047 m2, or about 40% of a hectare. The acre is sometimes abbreviated ac, but is usually spelled out as the word "acre".

AI overview

An acre is a unit of land area used in the British and American measurement systems, traditionally defined as a rectangular plot measuring one chain by one furlong (66 by 660 feet), which equals 43,560 square feet or roughly 4,047 square meters. It matters because it's the standard way people in the United States and British Commonwealth countries measure and describe land area for property, farming, and real estate purposes.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Unit.name: acre
Unit.image: Acre superimposed over football fields.svg
Unit.caption: The area of one acre (red) superposed on an American football field (green) and association football/soccer pitch (blue)
Unit.standard: US customary units, Imperial units
Unit.quantity: area
Unit.symbol: ac
Unit.symbol2: acre
Unit.units1: SI units
Unit.inunits1: =
Unit.units2: US customary, Imperial
Unit.inunits2: ≡ ≡  sq mi

via Wikipedia infobox

Wikidata facts

Image: Acre (PSF).png

Show 5 more facts

unit symbol: angol hold
Commons category: Acre (unit)
conversion to SI unit: 4046.8564224
conversion to standard unit: 6272640
Wikidata SPARQL query equivalent: wd:Q81292 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)

Sources (1)

wikidata.org

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~13 min read

Article

14 sections

Contents

Description
US survey acres
Spanish acre
Use
Republic of Ireland
Indian subcontinent
United Kingdom
Equivalence to other units of area
Historical origin
Legacy units
See also
Notes
References
External links

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 eight oxen in one day. The acre is still a statutory measure in the United States, where both the international acre and the US survey acre are in use, but they differ by only four parts per million. The most common use of the acre is to measure tracts of land. The acre is used in many existing and former Commonwealth of Nations countries by custom. In a few, it continues as a statute measure, although not since 2010 in the UK, and not for decades in Australia, New Zealand, and South Africa. In many places where the acre is no longer a statute measure, it is still lawful to use as supplementary information next to the statutory hectare measurement.