Browse Definitions :
Definition

area (A)

Area (symbolized A ) is a two-dimensional quantity representing amount or extent of surface. The standard unit of area in the International System of Units ( SI ) is the meter squared (m 2 ).

Area is usually measured or defined on a flat surface, also called a Euclidean plane, or on a spherical surface. For example, we might speak of the area of a parcel of land, the cross-sectional area of a fiber optic cable, or the surface area of the earth. But surface area is occasionally determined for irregular objects. In the case of certain extremely complex or esoteric surfaces, the area might be impossible to define or measure. One example is a mathematical object having a fractional number of dimensions. Another example is an object without a well-defined surface.

When expressing large or small areas, prefix multiplier s are attached to the meter squared. The table below shows the most common alternative area units and their relationship to the meter squared.

Unit
(and symbol)
To convert to meters
squared, multiply by:
Conversely,
multiply by:
kilometer squared (km 2 ) 10 6 10 -6
centimeter squared (cm 2 ) 10 -4 10 4
millimeter squared (mm 2 ) 10 -6 10 6
circular mil 5.066 x 10 -10 1.974 x 10 9
foot squared (ft 2 ) 0.0929 10.76
micrometer squared or
micron squared (µ 2 )
10 -12 10 12
nanometer squared (nm 2 ) 10 -18 10 18
Angström squared (Ä 2 ) 10 -20 10 20

Compare displacement and volume . Also see meter squared , centimeter squared , foot squared , circular mil , International System of Units ( SI ), and Table of Physical Units .

This was last updated in March 2011
SearchCompliance
  • ISO 31000 Risk Management

    The ISO 31000 Risk Management framework is an international standard that provides businesses with guidelines and principles for ...

  • pure risk

    Pure risk refers to risks that are beyond human control and result in a loss or no loss with no possibility of financial gain.

  • risk reporting

    Risk reporting is a method of identifying risks tied to or potentially impacting an organization's business processes.

SearchSecurity
  • black hat hacker

    A black hat hacker has been historically used to describe one who has malicious intent -- such as theft of information, fraud or ...

  • cookie poisoning

    Cookie poisoning is a type of cyber attack in which a bad actor hijacks, forges, alters or manipulates a cookie to gain ...

  • footprinting

    Footprinting is an ethical hacking technique used to gather as much data as possible about a specific targeted computer system, ...

SearchHealthIT
SearchDisasterRecovery
  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • fault-tolerant

    Fault-tolerant technology is a capability of a computer system, electronic system or network to deliver uninterrupted service, ...

  • synchronous replication

    Synchronous replication is the process of copying data over a storage area network, local area network or wide area network so ...

SearchStorage
  • Remote Direct Memory Access (RDMA)

    Remote Direct Memory Access (RDMA) is a technology that enables two networked computers to exchange data in main memory without ...

  • storage (computer storage)

    Data storage is the collective methods and technologies that capture and retain digital information on electromagnetic, optical ...

  • storage medium (storage media)

    In computers, a storage medium is a physical device that receives and retains electronic data for applications and users and ...

Close