Area units calculator & converter tool
Km2 Conversions Table
Equivalent of 18 km2 (Square Kilometer): |
18000000 m2 (Square meter) |
180000000000 cm2 (Square centimeter) |
1800000000 dm2 (Square decimeter) |
18000000000000 mm2 (Square milimeter) |
1800 Hectare |
180000 Are |
18000 Decare |
18000000 Centiare |
5265.09 Arpent |
18000000000 Barn |
193750200 Square feet |
4447.89 Acre |
711664.2 Square perche |
6.9498 Square mil |
21527820 Square yard |
27900083296.733 Square inch |
0.19314 Canton |
27.792 Homestead |
17791.2 Rood |
Km2 / Perche2 Units Definition
km2 (Square Kilometer)
The square kilometer (km2) is a unit of measurement of area. One square kilometer is equal to the area of a square whose sides measure one kilometer.
Square perche
A square perch (often shortened to just a perch) is a unit of measurement and is equal to 25.29285264 square metres. Confusingly, a perch (not the squared
variety) is also called a rod or pole because it’s based on a surveyor’s tool
measuring exactly 5½ yards or 16½ feet or ¼ of a surveyor’s chain. The perch or rod was helpful tool and measurement for a surveyor because it could be used to create a ‘perfect’ acre of 40 perches by 4 perches – remember 160 perches equals an acre.