Area is a quantity that expresses the extent of a two-dimensional surface or shape, or planar lamina, in the plane. Area can be understood as the amount of material with a given thickness that would be necessary to fashion a model of the shape, or the amount of paint necessary to cover the surface with a single coat.
Characteristic |
Description |
Dimension (SI) |
L * L |
Common symbol(s) |
A |
Table 1: Quantity brief
Unit name |
Symbol |
Conversion to base unit |
Relation to SI units |
|
SI |
square kilometer |
km2 |
* 103*2 |
|
SI |
hectare(1) |
ha |
* 102*2 |
|
SI |
square meter |
m2 |
* 1 |
|
SI |
square centimeter |
cm2 |
* 10-2*2 |
|
SI |
square millimeter |
mm2 |
* 10-3*2 |
|
Imp |
square mile |
sq mi |
* 52802 |
(1.609.344)2m2 |
Imp |
square yard |
yd2 |
* 9 |
(0.9144)2m2 |
Imp |
square foot |
ft2 |
* 1 |
(0.3048)2m2 |
Imp |
square inch |
in2 |
* 1/122 |
(0.0254)2m2 |
USS |
square survey mile |
m2 |
* 5280 |
(50500 * 1200/3937)2m2 |
USS |
square survey foot |
ft2 |
* 1 |
(1200/3937)2m2 |
USS |
square survey inch |
in2 |
* 1/122 |
(1200/47244)2m2 |
Table 2: Supported units. Basis units for a unit system are printed in boldface.
Ad 1) The hectare is one of the non-SI units accepted for use with the SI units.
