Area

Top  Previous  Next

The following units are included in this section:

 

ID

Unit

Definition

Wikipedia page and other notes

1

sq. metre (m2)

-

https://en.wikipedia.org/wiki/Square_metre

2

sq. centimetre (cm2)

10-4 m2

https://en.wikipedia.org/wiki/Centimetre

Page refers to centimetre, not sq. centimetre

3

sq. millimetre (mm2)

10-6 m2

https://en.wikipedia.org/wiki/Millimetre

Page refers to millimetre, not sq. millimetre

4

sq. kilometre (km2)

106 m2

https://en.wikipedia.org/wiki/Square_kilometre

5

sq. inch (in2)

1 in2 = 6.4516∙10-4 m2

https://en.wikipedia.org/wiki/Square_inch

6

sq. foot (ft2)

1 ft2 = 0.09290304 m2

https://en.wikipedia.org/wiki/Square_foot

7

sq. yard (yd2)

1 yd2 = 0.83612736 m2

https://en.wikipedia.org/wiki/Square_yard

8

sq. mile (mi2)

1 mi2 = 2,589,988.110336 m2

https://en.wikipedia.org/wiki/Square_mile

Not to be confused with other types of miles

9

acre (ac)

(1/640) mi2

https://en.wikipedia.org/wiki/Acre

10

are (a)

100 m2

https://en.wikipedia.org/wiki/Hectare#Are

11

decare (daa)

1000 m2

https://en.wikipedia.org/wiki/Hectare#Decare

12

hectare (ha)

10,000 m2

https://en.wikipedia.org/wiki/Hectare

13

stremma [royal]

1000 m2

https://en.wikipedia.org/wiki/Stremma

14

barn (b)

10-28 m2

https://en.wikipedia.org/wiki/Barn_(unit)

15

sq. decimetre (dm2)

10-2 m2

https://en.wikipedia.org/wiki/Decimetre

Page refers to decimetre, not sq. decimetre

16

sq. decametre (dam2)

100 m2

https://en.wikipedia.org/wiki/Decametre

Page refers to decametre, not sq. decametre

17

sq. nautical mile (nmi2)

3,429,904 m2

https://en.wikipedia.org/wiki/Nautical_mile

Page refers to nautical mile, not sq. nautical mile. Not to be confused with other types of miles

18

sq. angstrom (Å2)

10-20 m2

https://en.wikipedia.org/wiki/Angstrom

Page refers to angstrom, not sq. angstrom

19

sq. hectometre (hm2)

10,000 m2

https://en.wikipedia.org/wiki/Hectometre

Page refers to hectometre, not sq. hectometre

20

sq. light-year (ly2)

89,505,421,074,818,927,300,612,528,640,000 m2

https://en.wikipedia.org/wiki/Light-year

Page refers to light-year, not sq. light-year

21

sq. micrometre (μm2)

10-12 m2

https://en.wikipedia.org/wiki/Micrometre

Page refers to micrometre, not sq. micrometer

22

sq. nanometre (nm2)

10-18 m2

https://en.wikipedia.org/wiki/Nanometre

Page refers to nanometre, not sq. nanometre

23

sq. thousandth of an inch (mil2)

10-6 in2

https://en.wikipedia.org/wiki/Thousandth_of_an_inch

Page refers to thousandth of an inch, not sq. thousandth of an inch

24

sq. astronomical unit (AU2)

22,379,522,917,973,918,490,000 m2

https://en.wikipedia.org/wiki/Astronomical_unit

Page refers to astronomical unit, not sq. astronomical unit

25

sq. parsec (pc2)

(419,904,000,000/π2) AU2

https://en.wikipedia.org/wiki/Parsec

Page refers to parsec, not sq. parsec

 

All the above definitions of the various units are EXACT.

Note: In the above, a period (.) is used to indicate the decimal place and a comma (,) is used to separate groups of thousands.

 

Type of conversion relationship: DIRECTLY PROPORTIONAL (y=ax)

Example conversion diagram (see two units in bold above):

Area