Area units calculator & converter tool
Km2 Conversions Table
Equivalent of 4 km2 (Square Kilometer): |
4000000 m2 (Square meter) |
40000000000 cm2 (Square centimeter) |
400000000 dm2 (Square decimeter) |
4000000000000 mm2 (Square milimeter) |
400 Hectare |
40000 Are |
4000 Decare |
4000000 Centiare |
1170.02 Arpent |
4000000000 Barn |
43055600 Square feet |
988.42 Acre |
158147.6 Square perche |
1.5444 Square mil |
4783960 Square yard |
6200018510.385 Square inch |
0.04292 Canton |
6.176 Homestead |
3953.6 Rood |
Km2 / Hectare 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.
Hectare
hectare, unit of area in the metric system equal to 100 ares, or 10,000 square meters, and the equivalent of 2.471 acres in the British imperial system and the customary measurement of the United States. The term is derived from the Latin area and hect, an irregular contraction of the Greek word percent. Although the are is the primary metric unit of land measurement, the hectare is more commonly used in practice. The hectare is, by definition, equal to one djerib in Turkey, one jerib in Iran, one gong qing in mainland China, one manzana in Argentina and one bunder in the Netherlands.