Acres (ac)
The acre is a unit of land area equal to 43,560 square feet, 4,840 square yards, or about 4,047 square meters.
Convert acres to any area unit
1 acre = 4,046.856422 square meters
Quick facts
- Unit
- Acre (plural: acres)
- Symbol
- ac
- Measures
- Area
- System
- US & imperial
- Equals
- 4,046.8564224 square meters
- Definition
- 43,560 square feet (exactly 4,046.8564224 m²).
- Also written
- international acre
1 acre in other units
| Square meters | 4,046.856422 m² |
| Square feet | 43,560 ft² |
| Hectares | 0.4046856422 ha |
| Square kilometers | 0.004046856422 km² |
| Square miles | 0.0015625 mi² |
| Square centimeters | 40,468,564.22 cm² |
| Square yards | 4,840 yd² |
| Square inches | 6,272,640 in² |
What is an acre?
The acre is a unit of land area equal to 43,560 square feet, 4,840 square yards, or about 4,047 square meters. It is used for land and property in the United States, the UK, Canada, Australia, India and Pakistan. 640 acres make one square mile.
An acre has no fixed shape. Historically it was a strip one furlong (660 ft) long and one chain (66 ft) wide, the amount of land a team of oxen could plough in a day.
Where the acre sits among area units
The acre is number 73 of 112 on our scale of area units, ordered from smallest to largest.
What acres are used for
- Land, farm and property sizes
- Parks, golf courses and campuses
- Real estate listings in the US and UK
Acres in real life
- An American football field without end zones is about 1.1 acres
- A typical US suburban lot is about 0.25 acres
- Central Park is 843 acres
- A square acre is about 208.7 ft (63.6 m) on each side
One acre is about 3.2 Olympic pools, or about 9.6 basketball courts, or about 16 tennis courts, or about 76% of an American football field.
History of the acre
The acre dates back to Anglo-Saxon England. Its size varied until it was standardized as 160 square rods. In 1959 it was linked to the international foot, and from 2023 the US survey acre was retired in favor of this international acre.
Top acre conversions
Common amounts of acres
- 0.1 ac
- 0.2 ac
- 0.3 ac
- 0.4 ac
- 0.5 ac
- 0.6 ac
- 0.7 ac
- 0.8 ac
- 0.9 ac
- 1 ac
- 1.5 ac
- 2 ac
- 2.5 ac
- 3 ac
- 3.5 ac
- 4 ac
- 4.5 ac
- 5 ac
- 6 ac
- 7 ac
- 7.5 ac
- 8 ac
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- 500 ac
- 600 ac
- 700 ac
- 800 ac
- 900 ac
- 1,000 ac
- 1,200 ac
- 1,500 ac
- 2,000 ac
- 2,500 ac
- 3,000 ac
- 4,000 ac
- 5,000 ac
- 10,000 ac
Convert acres to all 111 other units
Metric
US & imperial
- ac to ft²
- ac to mi²
- ac to yd²
- ac to in²
- ac to cmil
- ac to roofing square
- ac to section
- ac to rd²
- ac to US survey acre
- ac to rood
- ac to ch²
- ac to mil²
- ac to township
- ac to homestead
- ac to Irish acre
- ac to Scottish acre
- ac to circular inch
- ac to Cheshire acre
East & Southeast Asian
- ac to 평
- ac to 亩
- ac to 坪
- ac to ไร่
- ac to 坪
- ac to งาน
- ac to ตร.ว.
- ac to 顷
- ac to 町
- ac to 甲
- ac to 反
- ac to 分
- ac to 단보
- ac to 정보
- ac to 畝
- ac to 厘
- ac to 合
- ac to 分
- ac to 마지기
- ac to square chi
South Asian
- ac to bigha
- ac to kanal
- ac to marla
- ac to cent
- ac to kattha
- ac to guntha
- ac to biswa
- ac to ground
- ac to ankanam
- ac to chatak
- ac to dhur
- ac to killa
- ac to murabba
European & Middle Eastern
- ac to dunam
- ac to feddan
- ac to arpent
- ac to Morgen
- ac to Joch
- ac to desyatina
- ac to jerib
- ac to qirat
- ac to Tagwerk
- ac to square perch (French)
- ac to square sazhen
- ac to square versta
Latin American
- ac to manzana
- ac to alqueire paulista
- ac to alqueire mineiro
- ac to v²
- ac to cuadra (area)
- ac to fanega (area)
- ac to tarea
- ac to alqueire baiano
- ac to caballeria
- ac to square braca
Ancient
- ac to jugerum
- ac to aroura
- ac to centuria
- ac to actus
- ac to heredium
- ac to saltus
- ac to square Roman foot
- ac to square plethron
Scientific
Everyday comparisons
Convert to acres
Frequently asked questions
What is an acre?
The acre is a unit of land area equal to 43,560 square feet, 4,840 square yards, or about 4,047 square meters.
How is the acre defined?
43,560 square feet (exactly 4,046.8564224 m²).
How many square meters are in an acre?
One acre equals 4,046.856422 square meters.
How many square feet are in an acre?
One acre equals 43,560 square feet.
How many hectares are in an acre?
One acre equals 0.4046856422 hectares.