Definition

# foot squared (square foot)

The foot squared, also called the square foot, is the standard unit of area in the English foot-pound-second (fps) system. The symbol for foot or feet squared is ft2. Less formally, square foot or feet is sometimes abbreviated sq ft.

When calculating area, it is important to realize that area is proportional to the square of the linear dimension. Thus, if all linear dimensions are doubled, the area becomes four times (22) as great; if all linear dimensions are cut in half, the area becomes 1/4 (1/22) as great. An area of 1 ft2 is equal to 144 inches squared (144 in2), but only 1/9 of a yard squared (1/9 yd2).

When converting between feet squared and metric units of area such as meters squared (m2) or centimeters squared (cm2), the linear-unit conversion factor must be squared. To convert feet squared approximately to meters squared, multiply by 0.09290. Conversely, multiply by 10.76. To convert feet squared approximately to centimeters squared, multiply by 929.0. Conversely, multiply by 0.001076.

Also see area, meter, meter squared, centimeter squared, circular mil, International System of Units (SI), and Table of Physical Units.

This was last updated in September 2005
Posted by: Margaret Rouse

Register now to receive SearchCIO-MidMarket.com-related news, tips and more, delivered to your inbox.
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

#### More News and Tutorials

• ##### Remote backup can ease network disaster recovery

Backing up to local disk or tape can protect against the accidental destruction of a file but will do nothing to protect you when your facility suffers fire or flooding. Remote backup provides a better solution. This tip looks at two possibilities for remote backup: Choosing an outsourced remote backup service, or using software to do your own backups to an offsite facility.

• ##### VoIP now part of phishing attacks

Learn how attackers are using the widespread deployment of low-cost VoIP to leverage phishing attacks.

• ##### VoIP privacy on the WAN

Is the government listening to your VoIP traffic? Can other companies spy on your WAN? It may sound like a paranoid conspiracy theory, but it's not that far out, technologically speaking. In this tip, Tom Lancaster looks at just how exposed your WAN traffic may be.