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 “are” is a unit of area primarily used in land measurement, notably in countries employing the metric system. Introduced in France in 1795, it represents 100 square meters, making it a practical unit for comparing parcels of land. Interestingly, it’s the base unit for hectares, with one hectare equating to 100 ares or 10,000 square meters. While the are has been largely overshadowed by hectares in commercial and agricultural contexts, it remains a vital unit in some regions for surveying smaller plots. The persistence of the “are” in certain legal and cultural settings highlights how historical units can remain relevant despite broader shifts towards newer measurement systems.
Hectares | Ares |
---|---|
0
ha
|
0
a
|
0.1
ha
|
10
a
|
0.2
ha
|
20
a
|
0.3
ha
|
30
a
|
0.4
ha
|
40
a
|
0.5
ha
|
50
a
|
0.6
ha
|
60
a
|
0.7
ha
|
70
a
|
0.8
ha
|
80
a
|
0.9
ha
|
90
a
|
1
ha
|
100
a
|
1.1
ha
|
110
a
|
1.2
ha
|
120
a
|
1.3
ha
|
130
a
|
1.4
ha
|
140
a
|
1.5
ha
|
150
a
|
1.6
ha
|
160
a
|
1.7
ha
|
170
a
|
1.8
ha
|
180
a
|
1.9
ha
|
190
a
|
2
ha
|
200
a
|
2.1
ha
|
210
a
|
2.2
ha
|
220
a
|
2.3
ha
|
230
a
|
2.4
ha
|
240
a
|
2.5
ha
|
250
a
|
2.6
ha
|
260
a
|
2.7
ha
|
270
a
|
2.8
ha
|
280
a
|
2.9
ha
|
290
a
|
3
ha
|
300
a
|
3.1
ha
|
310
a
|
3.2
ha
|
320
a
|
3.3
ha
|
330
a
|
3.4
ha
|
340
a
|
3.5
ha
|
350
a
|
3.6
ha
|
360
a
|
3.7
ha
|
370
a
|
3.8
ha
|
380
a
|
3.9
ha
|
390
a
|
4
ha
|
400
a
|
4.1
ha
|
410
a
|
4.2
ha
|
420
a
|
4.3
ha
|
430
a
|
4.4
ha
|
440
a
|
4.5
ha
|
450
a
|
4.6
ha
|
460
a
|
4.7
ha
|
470
a
|
4.8
ha
|
480
a
|
4.9
ha
|
490
a
|
5
ha
|
500
a
|
5.1
ha
|
510
a
|
5.2
ha
|
520
a
|
5.3
ha
|
530
a
|
5.4
ha
|
540
a
|
5.5
ha
|
550
a
|
5.6
ha
|
560
a
|
5.7
ha
|
570
a
|
5.8
ha
|
580
a
|
5.9
ha
|
590
a
|
6
ha
|
600
a
|
6.1
ha
|
610
a
|
6.2
ha
|
620
a
|
6.3
ha
|
630
a
|
6.4
ha
|
640
a
|
6.5
ha
|
650
a
|
6.6
ha
|
660
a
|
6.7
ha
|
670
a
|
6.8
ha
|
680
a
|
6.9
ha
|
690
a
|
7
ha
|
700
a
|
7.1
ha
|
710
a
|
7.2
ha
|
720
a
|
7.3
ha
|
730
a
|
7.4
ha
|
740
a
|
7.5
ha
|
750
a
|
7.6
ha
|
760
a
|
7.7
ha
|
770
a
|
7.8
ha
|
780
a
|
7.9
ha
|
790
a
|
8
ha
|
800
a
|
8.1
ha
|
810
a
|
8.2
ha
|
820
a
|
8.3
ha
|
830
a
|
8.4
ha
|
840
a
|
8.5
ha
|
850
a
|
8.6
ha
|
860
a
|
8.7
ha
|
870
a
|
8.8
ha
|
880
a
|
8.9
ha
|
890
a
|
9
ha
|
900
a
|
9.1
ha
|
910
a
|
9.2
ha
|
920
a
|
9.3
ha
|
930
a
|
9.4
ha
|
940
a
|
9.5
ha
|
950
a
|
9.6
ha
|
960
a
|
9.7
ha
|
970
a
|
9.8
ha
|
980
a
|
9.9
ha
|
990
a
|
10
ha
|
1000
a
|
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