1 E6 m²
To help compare sizes of different geographic regions, we list here areas between 1
km² (100
hectares) and 10 km² (1000 hectares).
See also areas of other orders of magnitude.
*
Areas smaller than 1 km²* 1
Square kilometre (
U.S. spelling:
square kilometer), symbol
km², is an
SI unit of
surface area. It is one of the
SI derived units. It is equal to:
** 100
hectares
** 10
6 m² or 1,000,000 m²
** 0.386 square
miles
** 247
acres
** the area of a
square of side length
1 km ** a
cube with this surface area has sides of length
408 m
** a
circle of this area has a radius of
564 m
** a
sphere of this surface area has a radius of
282 m
* 135 hectaresâ€"the campus of the
United States Naval Academy* 195 hectaresâ€"
Monaco (country ranked 192
nd by area)
* 200 hectaresâ€"
Herm, Channel Islands
* 290 hectaresâ€"
City of London* 320 hectaresâ€"
Hampstead Heath in
London* 650 hectaresâ€"
Gibraltar* 890 hectaresâ€"size of largest
organism on Earth,
Armillaria ostoyae.
Reference*
Areas larger than 10 km²"km²" means square kilometre and not kiloâ€"square metre. For example, 3 km² is equal to 3 000 000 m² and not to 3000 m² (nor even 9 000 000 m²). Thus, in the case of an area, the SI prefixes provide steps of a factor one million instead of one thousand
.
See also:
Orders of magnitude*
Conversion Calculator for Units of AREA
