Hectare (ha)
The hectare is 10,000 square meters, the area of a square measuring 100 meters on each side. It occupies the middle ground between the square meter used for buildings and the square kilometer used for geography, making it the natural unit for farms, forests, parks, and development sites. A football pitch is roughly 0.7 hectares, a typical European family farm might be 20 to 100 hectares, and a small nature reserve might cover a few hundred. The hectare is not formally an SI unit, but the International Bureau of Weights and Measures accepts it for use with the SI, and it appears in legislation, land registries, and agricultural statistics in virtually every metric country. In everyday conversation across Europe, Australia, and much of Asia, land is bought, sold, and taxed by the hectare.
Definition
One hectare is exactly 10,000 square meters, 0.01 square kilometers, or 100 ares. In imperial terms, one hectare equals approximately 2.4711 acres, 107,639 square feet, or about 11,960 square yards. A square hectare has sides of exactly 100 meters and a perimeter of 400 meters.
History
The hectare was introduced with the metric system in France in 1795. Its name combines the Greek hekaton, meaning hundred, with the are, the base metric unit of land area equal to 100 square meters. One hundred ares make one hectare. The are itself never gained wide popularity, but the hectare quickly became the dominant unit for agricultural land because its size matched the scale at which farms operate. A hectare is large enough to be meaningful for crop yields and land prices yet small enough to describe individual fields and plots. When the SI system was formalized in 1960, the hectare was not included as an SI unit, but it was listed among the non-SI units accepted for use with the SI. This status continues today. In 2010 the European Union mandated the use of hectares for agricultural area reporting across all member states, cementing its role in European land measurement.
Common Uses
Agriculture is the hectare's home territory. Crop yields are reported in tonnes per hectare, farmland prices in euros or dollars per hectare, and agricultural subsidies are calculated per hectare. Forestry uses hectares for logging concessions and reforestation targets. Urban planning describes parks, development zones, and green belts in hectares. Wine regions measure vineyard area in hectares, and wine production statistics often reference yield per hectare. Real estate for larger properties, from estates to commercial land, is quoted in hectares across most of the world. Environmental reporting tracks deforestation, wetland loss, and habitat restoration in hectares.
Did You Know? Facts About Hectare
- A standard FIFA football pitch ranges from 0.62 to 0.82 hectares depending on the exact dimensions chosen. The most common size, 105 by 68 meters, is 0.714 hectares.
- The average farm size in Germany is about 63 hectares, compared to roughly 180 hectares in the United States, where farms tend to be much larger.
- One hectare of mature tropical rainforest can contain over 400 different tree species, more diversity than exists in the entire forests of some temperate countries.
- A hectare of wheat in a good year produces enough grain to make roughly 3,000 to 4,000 loaves of bread.
- The Palace of Versailles and its gardens cover about 815 hectares, which is roughly the size of a small town.