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| square foot | |
|---|---|
| Unit system | Imperial, United States customary units |
| Unit of | area |
| Symbol | ft2, sq ft |
| Conversions | |
| 1 ft2in ... | ... is equal to ... |
| Imperial/US |
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| SI units |
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Thesquare foot (pl. square feet; abbreviatedsq ft,sf, orft2; also denoted by '2 and⏍) is animperial unit andU.S. customary unit (non-SI, non-metric) ofarea, used mainly in theUnited States,Canada, theUnited Kingdom,Bangladesh,India,Nepal,Pakistan,Ghana,Liberia,Malaysia,Myanmar,Singapore andHong Kong.[citation needed] It is defined as the area of asquare with sides of 1foot.
Although the pluralization is regular in the noun form, when used as an adjective, the singular is preferred. So, an apartment measuring 700 square feet could be described as a 700 square-foot apartment.[citation needed] This corresponds to common linguistic usage offoot.
The square foot unit is commonly used in real estate.[1] Dimensions are generally taken with a laser device, the latest in a long line of tools used to gauge the size of apartments[2] or other spaces.Real estate agents often measure straight corner-to-corner, then deduct non-heated spaces, and add heated spaces whose footprints exceed the end-to-end measurement.[3]
1 square foot conversion to other units of area: