Area

What is a Acre? (ac)

Definition

An acre is a unit of land area in the imperial and US customary systems. One acre equals 43,560 square feet or approximately 4,047 square meters. Historically, an acre was defined as the area that could be ploughed in one day by a yoke of oxen. Today it is widely used in the US, UK, and other English-speaking countries for measuring land.

Common Uses

  • › Real estate and land sales
  • › Farming and agricultural land
  • › National parks and nature reserves
  • › Golf courses and sports grounds

Converters

Acres to Hectares →

Key Facts

  • Symbol
    ac
  • Category
    Area
  • 1 ac = 43,560 ft²
  • 1 ac ≈ 4,047 m²
  • 1 ac ≈ 0.405 ha
  • 640 ac = 1 mi²

Related Terms

About the Acre

An acre is a unit of land area in the imperial and US customary systems. One acre equals 43,560 square feet or approximately 4,047 square meters. Historically, an acre was defined as the area that could be ploughed in one day by a yoke of oxen. Today it is widely used in the US, UK, and other English-speaking countries for measuring land.

Equivalents and conversions

  • 1 ac = 43,560 ft²
  • 1 ac ≈ 4,047 m²
  • 1 ac ≈ 0.405 ha
  • 640 ac = 1 mi²

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