Area units calculator & converter tool
Km2 Conversions Table
Equivalent of 20 km2 (Square Kilometer): |
20000000 m2 (Square meter) |
200000000000 cm2 (Square centimeter) |
2000000000 dm2 (Square decimeter) |
20000000000000 mm2 (Square milimeter) |
2000 Hectare |
200000 Are |
20000 Decare |
20000000 Centiare |
5850.1 Arpent |
20000000000 Barn |
215278000 Square feet |
4942.1 Acre |
790738 Square perche |
7.722 Square mil |
23919800 Square yard |
31000092551.925 Square inch |
0.2146 Canton |
30.88 Homestead |
19768 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.