A Project of the Center for Advanced Study in the Visual Arts, National Gallery of Art
History of Early American Landscape Design

Template:Convert/list of units/area/short list

[http://www.nga.gov/content/ngaweb/research/casva/research-projects.html A Project of the National Gallery of Art, Center for Advanced Study in the Visual Arts ]
AREA
(Full list)
system unit unit-
code
abbrev-
iation
notes conversion factor/m2 combinations
SI square kilometre km2 km2 US spelling: square kilometer
1,000,000
  • km2 sqmi
square metre m2 m2 US spelling: square meter
1
  • m2 sqft
square centimetre cm2 cm2 US spelling: square centimeter
0.0001
  • cm2 sqin
square millimetre mm2 mm² US spelling: square millimeter
0.000001
  • mm2 sqin
non-SI metric hectare ha ha 10,000
Imperial
&
US customary
square mile sqmi sq mi 2,589,988.110336
  • sqmi km2
acre acre 4,046.856422
square yard sqyd sq yd 0.83612736
square foot sqft
(sqfoot)
sq ft Code "sqfoot" will show "square foot" if plural. 0.09290304
  • sqft m2 (sqfoot m2)
square inch sqin sq in 0.00064516
  • sqin cm2
Other square nautical mile sqnmi sq nmi 3,429,904
dunam dunam For alternative spellings and definitions see the full list 1,000
tsubo (400/121)

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History of Early American Landscape Design contributors, "Template:Convert/list of units/area/short list," History of Early American Landscape Design, , https://heald.nga.gov/mediawiki/index.php?title=Template:Convert/list_of_units/area/short_list&oldid=855 (accessed October 27, 2021).

A Project of the Center for Advanced Study in the Visual Arts

National Gallery of Art, Washington