Convert Hectare [ha] to...
Hectare | |
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Unit system | metric |
Unit of | area |
Symbol | ha |
Unit conversions | |
1 ha in ... | ... is equal to ... |
SI units | 10000 m^{2} |
Imperial/US unit(s) | 2.4711 acre 11959.9 yd^{2} |
I want to convert: using
British/Imperial | Conversion |
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Square mile [mi^{2}] | |
Homestead | |
Acre | |
Rood | |
Square rod [rd^{2}] | |
Square | |
Square yard [yd^{2}] | |
Square foot [ft^{2}] | |
Square inch [in^{2}] |
Japanese | Conversion |
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Tsubo | |
Cho | |
Tann | |
Se |
Other | Conversion |
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Metric dunam | |
Cypriot dunam | |
Iraqi dunam | |
Greek stremma | |
Football pitch |
The hectare (symbol ha) is an SI accepted metric system unit of area equal to 100 ares (10,000 m2) and primarily used in the measurement of land as a metric replacement for the imperial acre.
An acre is about 0.405 hectare and one hectare contains about 2.47 acres.
In 1795, when the metric system was introduced, the are was defined as 100 square metres and the hectare ("hecto-" + "are") was thus 100 ares or ^{1}/_{100} km^{2}. When the metric system was further rationalised in 1960, resulting in the International System of Units (SI), the are was not included as a recognised unit. The hectare, however, remains as a non-SI unit accepted for use with the SI units, mentioned in Section 4.1 of the SI Brochure as a unit whose use is "expected to continue indefinitely".
This article uses material from the Wikipedia article "Hectare", which is released under the Creative Commons Attribution-Share-Alike License 3.0.