Hectare

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Comparison of Area units
Unit SI SI base
1 ca 1 m² 1 m²
1 a 1 dam² 102 m²
1 ha 1 hm² 104 m²
100 ha 1 km² 106 m²
non-SI comparisons
non-SI metric SI base
2.471 acre 1 ha 104 m²
107,639 sq ft 1 ha 104 m²

A hectare (symbol ha, pronounced /ˈhɛktɛər/) is a unit of area equal to 10,000 square metres, or one square hectometre, and commonly used for measuring land area. A 100 m square is one ha. 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.

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[edit] Explanation

The hectare is commonly used in many countries, especially in domains concerned with land planning and management such as agriculture, forestry, and town planning where the use of square metres would be cumbersome. In the United Kingdom, United States, and to some extent in Canada, the acre is still used to describe area measurements in comparable situations.

[edit] Conversions

One hectare is equivalent to:

[edit] Metric

[edit] Imperial units

[edit] Other

[edit] See also

[edit] External links