Acres (ac)
An acre is a unit of area commonly used in the United States and other countries with British influence. It equals exactly 4,046.8564224 square meters or 43,560 square feet. The acre is not an SI unit but remains widely used for land measurement in agriculture and real estate [nist-si-guide].
Origin
The acre originated in medieval England as the area a yoke of oxen could plow in one day, standardized later by British law. It became widely adopted in the 19th century and was retained by the United States after metrication efforts [nist-si-guide].
Worldwide Use
Acres are primarily used in the United States, Canada, and the United Kingdom for land measurement and property deeds. Some Commonwealth countries and agricultural sectors also maintain its use alongside metric units [nist-si-guide].
Common References
- A typical American football field is about 1.32 acres
- A suburban residential lot often ranges from 0.1 to 0.5 acres
- A standard soccer field is approximately 1.76 acres