Area units calculator & converter tool
Are Conversions Table
Equivalent of 4 Are: |
| 400 m2 (Square meter) |
| 4000000 cm2 (Square centimeter) |
| 40000 dm2 (Square decimeter) |
| 400000000 mm2 (Square milimeter) |
| 0.0004 km2 (Square Kilometer) |
| 0.04 Hectare |
| 0.4 Decare |
| 400 Centiare |
| 0.117002 Arpent |
| 400000 Barn |
| 4305.56 Square feet |
| 0.098842 Acre |
| 15.81476 Square perche |
| 0.00015444 Square mil |
| 478.396 Square yard |
| 620001.8510385 Square inch |
| 4.292E-6 Canton |
| 0.0006176 Homestead |
| 0.39536 Rood |
Are / Hectare Units Definition
Are
Are, unit of area in the metric system, equal to 100 square meters and the equivalent of 0.0247 acre. Its multiple, the hectare (equal to 100 ares), is the primary unit of land measurement for most of the world. The are was the basic unit of area when the metric system was first decreed in France in 1795. When the International System of Units (SI) was adopted in 1960, the square meter replaced the are as the unit of area, but the International Bureau of Weights and Measures accepted the hectare as the common unit that can be used with the SI.
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.