面积是二维表面或形状范围的度量。它通常以平方米（例如平方米（平方米））为单位进行测量。
1 ground = 0.04 ha
1 ha = 24.711 ground
例子:
将15 地面转换为公顷：
15 ground = 0.607 ha
| 地面 | 公顷 |
|---|---|
| 0.01 ground | 0 ha |
| 0.1 ground | 0.004 ha |
| 1 ground | 0.04 ha |
| 2 ground | 0.081 ha |
| 3 ground | 0.121 ha |
| 5 ground | 0.202 ha |
| 10 ground | 0.405 ha |
| 20 ground | 0.809 ha |
| 30 ground | 1.214 ha |
| 40 ground | 1.619 ha |
| 50 ground | 2.023 ha |
| 60 ground | 2.428 ha |
| 70 ground | 2.833 ha |
| 80 ground | 3.237 ha |
| 90 ground | 3.642 ha |
| 100 ground | 4.047 ha |
| 250 ground | 10.117 ha |
| 500 ground | 20.234 ha |
| 750 ground | 30.351 ha |
| 1000 ground | 40.469 ha |
| 10000 ground | 404.686 ha |
| 100000 ground | 4,046.86 ha |
规则