This MedLibrary.org supplementary page on Hectare is provided directly from the open source Wikipedia as a service to our readers. Please see the note below on authorship of this content, as well as the Wikipedia usage guidelines. To search for other content from our encyclopedia supplement, please use the form below:
Related Sponsors
 |
It has been suggested that Decare be merged into this article or section. () |
 |
This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unverifiable material may be challenged and removed. (July 2008) |
|
||||||||||||||||||||||||||||||
A hectare (symbol ha, pronounced /ˈhɛktɛər/) is a unit of area equal to 10,000 square meters (107,639.1 sq ft), or one square hectometre (0.1 kilometer, or 100 meters, squared), and commonly used for measuring land area. A square 100 m on each side is one ha, the most common and convenient SI area multiple used in the surveying profession for day to day legal documents such as land deeds, mortgage surveys, town planning, environmental protection, and other necessary property considerations under the law. Square kilometers are often too large to work with conveniently, and square meters are similarly too small.
Contents |
Its base unit, the are, was defined by older forms of the metric system, but is no longer part of the modern metric system. The Comité International des Poids et Mesures classifies the hectare as a unit that is accepted for use with SI.
Explanation
The hectare is commonly used in most countries around the world, especially in domains concerned with land planning and management such as agriculture, forestry, and town planning. The few countries that still use the imperial system (i.e. United States, Myanmar, and to some extent in Canada) have a different unit of area, which is called acre, equal to 43,560 square feet or 33 feet x 1/4 mile, equivalent to .404695 ha.
Conversions
One hectare is equivalent to:
Metric
- 10,000 square metres
- 0.01 square kilometre
- 1 square hectometre = 100 metres × 100 metres (a square with sides 100 metres long)
- 10 decares
- 100 ares
- 10,000 centiares
Imperial units
- 2.4710538 international acres
- 2.4710439 U.S. survey acres
- 107,639 square feet
- 0.00386102 square miles (statute)
Other
- 15 mǔ (Chinese)
- 0.15 qǐng
- 10 dunam or dönüm (Middle East)
- 10 stremmata (Greece)
- 6.25 rai (Thai)
- ≈ 1.008 chō (Japanese)
- 7.47 bigha (Bangladesh, India, Nepal)
See also
- 1 E+4 m² for further comparisons
- conversion of units
- hecto-
- Hectometre
- Orders of magnitude
External links
Wikipedia content modification information:
- This page was last modified on 25 September 2008, at 02:47.
Wikipedia Authorship and Review
Wikipedia content provided here is not reviewed directly by MedLibrary.org. Wikipedia content is authored by an open community of volunteers and is not produced by or in any way affiliated with MedLibrary.org.
Wikipedia Usage Guidelines
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article on "Hectare".
The URL for this specific entry is:
All Wikipedia text is available under the terms of the GNU Free Documentation License. (See Copyrights for details). Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc.