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{{Short description|Imperial unit and U.S. customary unit of area}}
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{{References|date=October 2018}}{{Comparison_area_units.svg}}
{{More citations needed|date=February 2020}}
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The '''square foot''' (plural '''square feet'''; abbreviated sq. ft, sf, or ft<sup>2</sup>; also denoted by '<sup><sup>2</sup></sup>) is an [[imperial unit]] and [[U.S. customary unit]] (non-[[SI]], non-[[metric system|metric]]) of [[area]], used mainly in the United States and partially in Bangladesh, Canada, Ghana, Hong Kong, India, Malaysia, Nepal, Pakistan, Singapore and the United Kingdom.{{citation needed|date=August 2013}} It is defined as the area of a [[Square (geometry)|square]] with sides of 1 [[foot (length)|foot]].
{{Infobox unit
| name = square foot
| image =
| caption =
| standard = Imperial, United States customary units
| quantity = [[area]]
| symbol = ft<sup>2</sup>
| symbol2 = sq ft
| units1 = [[Imperial units|Imperial]]/[[US customary|US]]
| inunits1 = {{ubl|{{val|144|u=sq in}}|{{sfrac|1|9}} {{val|u=sq yd}}}}
| units2 = [[SI units]]
| inunits2 = {{ubl|{{val|929.0304|u=cm2}}|{{val|0.0929|u=m2}}}}
}}
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{{Comparison_area_units.svg}}


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The '''square foot''' ({{plural form|'''square feet'''}}; abbreviated '''sq ft''', '''sf''', or '''ft<sup>2</sup>'''; also denoted by ''''<sup><sup>2</sup></sup>''' and '''⏍''') is an [[imperial unit]] and [[U.S. customary unit]] (non-[[SI]], non-[[metric system|metric]]) of [[area]], used mainly in the [[United States]] and partially in [[Canada]], the [[United Kingdom]], [[Bangladesh]], [[India]], [[Nepal]], [[Pakistan]], [[Ghana]], [[Liberia]], [[Malaysia]], [[Myanmar]], [[Singapore]] and [[Hong Kong]].{{citation needed|date=August 2013}} It is defined as the area of a [[Square (geometry)|square]] with sides of 1 [[foot (length)|foot]].
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Although the pluralisation is regular in the noun form, when used as an adjective, the singular is preferred. So, a flat measuring 700 square feet could be described as a 700 square-foot flat. This corresponds to common linguistic usage of ''foot.''


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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|date=October 2021}} This corresponds to common linguistic usage of ''foot.''
== Conversions ==
1 square foot is equivalent to:
* 144 [[square inch]]es (sq in)
* {{frac|1|9}} [[square yard]] (sq yd)
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* ≈0.09290304 [[square meter]]s (symbol: m<sup>2</sup>)


The square foot unit is commonly used in real estate.<ref>{{Cite web|url=https://www.squarefoot.com/blog/find-square-footage-for-office-space/|title=How to Find the Square Feet of Your Office Space|date=2020-01-06|website=SquareFoot Blog|access-date=2020-01-14}}</ref> Dimensions are generally taken with a laser device, the latest in a long line of tools used to gauge the size of apartments<ref>{{Cite news|url=https://www.nytimes.com/2010/12/19/realestate/19cov.html|title=The Elusive Measure Known as the Square Foot|last=Santora|first=Marc|date=2010-12-17|work=The New York Times|access-date=2020-01-14|language=en-US|issn=0362-4331}}</ref> or other spaces. [[Real estate broker|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.<ref>{{Cite web|url=https://www.homeadvisor.com/r/calculating-square-footage/|title=Square Foot Calculator {{!}} How to Measure Square Feet|date=2016-01-04|website=Home Improvement Tips & Advice from HomeAdvisor|language=en-US|access-date=2020-01-14}}</ref>
1 [[acre]] is equivalent to 43,560 square feet.

'''1 square foot conversion to other units of area:'''

* 1 square foot (ft<sup>2</sup>) = 0.0000000358701 square miles (mi<sup>2</sup>)
* 1 square foot (ft<sup>2</sup>) = 0.000022956341 acres (ac)
* 1 square foot (ft<sup>2</sup>) = 0.111111111111 square yards (yd<sup>2</sup>)
* 1 square foot (ft<sup>2</sup>) = 144 square inches (in<sup>2</sup>)
* 1 square foot (ft<sup>2</sup>) = 144,000,000,000,000 square microinches (μin<sup>2</sup>)

* 1 square foot (ft<sup>2</sup>) = 0.00000009290304 square kilometers (km<sup>2</sup>)
* 1 square foot (ft<sup>2</sup>) = 0.000009290304 hectare (ha)
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* 1 square foot (ft<sup>2</sup>) = 0.09290304 square meters (m<sup>2</sup>)
* 1 square foot (ft<sup>2</sup>) = 9.290304 square decimeters (dm<sup>2</sup>) (uncommon)
* 1 square foot (ft<sup>2</sup>) = 929.0304 square centimeters (cm<sup>2</sup>)
* 1 square foot (ft<sup>2</sup>) = 92,903.04 square millimeters (mm<sup>2</sup>)
* 1 square foot (ft<sup>2</sup>) = 92,903,040,000 square micrometers (μm<sup>2</sup>)


== See also ==
== See also ==
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* [[Cubic foot]]
* [[Cubic foot]]
* [[Metrication in Canada]]
* [[Metrication in Canada]]
* [[Miscellaneous Technical (Unicode)]] for a list of miscellaneous technical symbols and fonts which support the ''square foot'' symbol
* [[Miscellaneous Technical (Unicode)]] for a list of miscellaneous technical symbols and fonts which support the ''square foot'' symbol {{angbr|⏍}}
* [[Orders_of_magnitude_(area)#10%E2%88%928_to_10%E2%88%921_square_metres|Orders of magnitude (area)]]
* [[Orders of magnitude (area)#10−8 to 10−1 square metres|Orders of magnitude (area)]]
* [[Square (algebra)]], [[square root]]
* [[Square (algebra)]], [[square root]]
{{div col end}}
{{div col end}}
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==References==
==References==
{{Reflist}}
{{Reflist}}

==External links==
*[https://www.coolstuffshub.com/area/convert/square-feet-to-acres/ Square feet conversion to acres and other units of area]

{{Imperial units}}
{{United States Customary Units}}


{{DEFAULTSORT:Square Foot}}
{{DEFAULTSORT:Square Foot}}
[[Category:Units of area]]
[[Category:Units of area]]
[[Category:Imperial units]]
[[Category:Imperial units]]
[[Category:Customary units of measurement in the United States]]

Latest revision as of 14:42, 15 October 2024

square foot
Unit systemImperial, United States customary units
Unit ofarea
Symbolft2, sq ft
Conversions
1 ft2 in ...... is equal to ...
   Imperial/US   
  • 144 sq in
  • ⁠1/9⁠ sq yd
   SI units   
  • 929.0304 cm2
  • 0.0929 m2
Comparison of 1 square foot with some Imperial and metric units of area

The square foot (pl. square feet; abbreviated sq ft, sf, or ft2; also denoted by '2 and ⏍) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States and partially in Canada, the United Kingdom, Bangladesh, India, Nepal, Pakistan, Ghana, Liberia, Malaysia, Myanmar, Singapore and Hong Kong.[citation needed] It is defined as the area of a square with sides of 1 foot.

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 of foot.

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:

  • 1 square foot (ft2) = 0.0000000358701 square miles (mi2)
  • 1 square foot (ft2) = 0.000022956341 acres (ac)
  • 1 square foot (ft2) = 0.111111111111 square yards (yd2)
  • 1 square foot (ft2) = 144 square inches (in2)
  • 1 square foot (ft2) = 144,000,000,000,000 square microinches (μin2)
  • 1 square foot (ft2) = 0.00000009290304 square kilometers (km2)
  • 1 square foot (ft2) = 0.000009290304 hectare (ha)
  • 1 square foot (ft2) = 0.09290304 square meters (m2)
  • 1 square foot (ft2) = 9.290304 square decimeters (dm2) (uncommon)
  • 1 square foot (ft2) = 929.0304 square centimeters (cm2)
  • 1 square foot (ft2) = 92,903.04 square millimeters (mm2)
  • 1 square foot (ft2) = 92,903,040,000 square micrometers (μm2)

See also

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References

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  1. ^ "How to Find the Square Feet of Your Office Space". SquareFoot Blog. 2020-01-06. Retrieved 2020-01-14.
  2. ^ Santora, Marc (2010-12-17). "The Elusive Measure Known as the Square Foot". The New York Times. ISSN 0362-4331. Retrieved 2020-01-14.
  3. ^ "Square Foot Calculator | How to Measure Square Feet". Home Improvement Tips & Advice from HomeAdvisor. 2016-01-04. Retrieved 2020-01-14.
[edit]
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