The hectare, a metric unit for measuring land area, is widely used around the globe, especially in agriculture, forestry, and land planning. Originating from France during the metric system’s inception in 1795, one hectare equates to 10,000 square meters (about 2.47 acres). Interestingly, the Great Barrier Reef Marine Park, one of the planet’s most extensive marine parks, spans about 344,400,000 hectares, illustrating the sheer magnitude that this unit can represent.
While it might seem specific to certain industries, the hectare is crucial in conservation efforts, playing a significant role in tracking deforestation and biodiversity loss worldwide. With global initiatives focusing on increasing protected areas, hectares have become a critical factor in ecological statistics and strategies, helping to foster a sustainable future.
The square kilometer is primarily used to quantify large areas of land. Fascinatingly, even though the metric system is standardized almost universally, the square kilometer remains one of the most significant units for various aspects of geography and urban planning. To put it in perspective, consider that the entire area of New York City’s Central Park measures approximately 3.41 square kilometers, which speaks volumes about its massive size within an urban environment.
Moreover, the square kilometer helps highlight the vastness of some of the world’s largest countries and cities. For instance, Russia, the largest country in the world, spans roughly 17 million square kilometers, showcasing the immense diversity and expanse of land that one country can encompass. This unit exemplifies the intriguing contrasts and scales of spaces we interact with globally.
Hectares | Square Kilometers |
---|---|
0
ha
|
0
km²
|
0.1
ha
|
0.001
km²
|
0.2
ha
|
0.002
km²
|
0.3
ha
|
0.003
km²
|
0.4
ha
|
0.004
km²
|
0.5
ha
|
0.005
km²
|
0.6
ha
|
0.006
km²
|
0.7
ha
|
0.007
km²
|
0.8
ha
|
0.008
km²
|
0.9
ha
|
0.009
km²
|
1
ha
|
0.01
km²
|
1.1
ha
|
0.011
km²
|
1.2
ha
|
0.012
km²
|
1.3
ha
|
0.013
km²
|
1.4
ha
|
0.014
km²
|
1.5
ha
|
0.015
km²
|
1.6
ha
|
0.016
km²
|
1.7
ha
|
0.017
km²
|
1.8
ha
|
0.018
km²
|
1.9
ha
|
0.019
km²
|
2
ha
|
0.02
km²
|
2.1
ha
|
0.021
km²
|
2.2
ha
|
0.022
km²
|
2.3
ha
|
0.023
km²
|
2.4
ha
|
0.024
km²
|
2.5
ha
|
0.025
km²
|
2.6
ha
|
0.026
km²
|
2.7
ha
|
0.027
km²
|
2.8
ha
|
0.028
km²
|
2.9
ha
|
0.029
km²
|
3
ha
|
0.03
km²
|
3.1
ha
|
0.031
km²
|
3.2
ha
|
0.032
km²
|
3.3
ha
|
0.033
km²
|
3.4
ha
|
0.034
km²
|
3.5
ha
|
0.035
km²
|
3.6
ha
|
0.036
km²
|
3.7
ha
|
0.037
km²
|
3.8
ha
|
0.038
km²
|
3.9
ha
|
0.039
km²
|
4
ha
|
0.04
km²
|
4.1
ha
|
0.041
km²
|
4.2
ha
|
0.042
km²
|
4.3
ha
|
0.043
km²
|
4.4
ha
|
0.044
km²
|
4.5
ha
|
0.045
km²
|
4.6
ha
|
0.046
km²
|
4.7
ha
|
0.047
km²
|
4.8
ha
|
0.048
km²
|
4.9
ha
|
0.049
km²
|
5
ha
|
0.05
km²
|
5.1
ha
|
0.051
km²
|
5.2
ha
|
0.052
km²
|
5.3
ha
|
0.053
km²
|
5.4
ha
|
0.054
km²
|
5.5
ha
|
0.055
km²
|
5.6
ha
|
0.056
km²
|
5.7
ha
|
0.057
km²
|
5.8
ha
|
0.058
km²
|
5.9
ha
|
0.059
km²
|
6
ha
|
0.06
km²
|
6.1
ha
|
0.061
km²
|
6.2
ha
|
0.062
km²
|
6.3
ha
|
0.063
km²
|
6.4
ha
|
0.064
km²
|
6.5
ha
|
0.065
km²
|
6.6
ha
|
0.066
km²
|
6.7
ha
|
0.067
km²
|
6.8
ha
|
0.068
km²
|
6.9
ha
|
0.069
km²
|
7
ha
|
0.07
km²
|
7.1
ha
|
0.071
km²
|
7.2
ha
|
0.072
km²
|
7.3
ha
|
0.073
km²
|
7.4
ha
|
0.074
km²
|
7.5
ha
|
0.075
km²
|
7.6
ha
|
0.076
km²
|
7.7
ha
|
0.077
km²
|
7.8
ha
|
0.078
km²
|
7.9
ha
|
0.079
km²
|
8
ha
|
0.08
km²
|
8.1
ha
|
0.081
km²
|
8.2
ha
|
0.082
km²
|
8.3
ha
|
0.083
km²
|
8.4
ha
|
0.084
km²
|
8.5
ha
|
0.085
km²
|
8.6
ha
|
0.086
km²
|
8.7
ha
|
0.087
km²
|
8.8
ha
|
0.088
km²
|
8.9
ha
|
0.089
km²
|
9
ha
|
0.09
km²
|
9.1
ha
|
0.091
km²
|
9.2
ha
|
0.092
km²
|
9.3
ha
|
0.093
km²
|
9.4
ha
|
0.094
km²
|
9.5
ha
|
0.095
km²
|
9.6
ha
|
0.096
km²
|
9.7
ha
|
0.097
km²
|
9.8
ha
|
0.098
km²
|
9.9
ha
|
0.099
km²
|
10
ha
|
0.1
km²
|
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