Square Feet (ft²)
A square foot is an imperial and US customary unit of area defined as the area of a square with sides one foot long. It equals exactly 0.092903 square meters per international agreement [nist-sp-811]. This unit is prevalent in real estate, construction, and interior design in the United States and some other countries.
Origin
The foot as a measurement dates back to ancient civilizations but was standardized in England by the Weights and Measures Act of 1824. The square foot became a common unit for area in English-speaking countries and was later defined precisely in relation to the meter for international consistency [nist-sp-811].
Worldwide Use
Square feet remain widely used in the US, Canada, and the UK for property measurement, building plans, and flooring. While most countries have adopted metric units, ft² persists in industries tied to imperial measurements [nist-sp-811].
Common References
- A small bedroom may be around 100 ft²
- A standard parking space is about 160 ft²
- An average office cubicle covers roughly 50 ft²