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

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

SearchCompliance

  • compliance audit

    A compliance audit is a comprehensive review of an organization's adherence to regulatory guidelines.

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • Whistleblower Protection Act

    The Whistleblower Protection Act of 1989 is a law that protects federal government employees in the United States from ...

SearchSecurity

  • payload (computing)

    In computing, a payload is the carrying capacity of a packet or other transmission data unit. The term has its roots in the ...

  • passphrase

    A passphrase is a string of characters longer than the usual password (which is typically from four to 16 characters long) that ...

  • Web application firewall (WAF)

    A Web application firewall (WAF) is a firewall that monitors, filters or blocks traffic to and from a Web application. WAFs are ...

SearchHealthIT

SearchDisasterRecovery

SearchStorage

  • computational storage

    Computational storage is defined as an architecture that couples compute with storage in order to reduce data movement. In doing ...

  • data deduplication

    Data deduplication -- often called intelligent compression or single-instance storage -- is a process that eliminates redundant ...

  • public cloud storage

    Public cloud storage, also called storage-as-a-service or online storage is a service model that provides data storage on a ...

Close