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 km²
1 km² = 2,471.052 ground
例子:
将15 地面转换为平方公里：
15 ground = 0.006 km²
| 地面 | 平方公里 |
|---|---|
| 0.01 ground | 4.0469e-6 km² |
| 0.1 ground | 4.0469e-5 km² |
| 1 ground | 0 km² |
| 2 ground | 0.001 km² |
| 3 ground | 0.001 km² |
| 5 ground | 0.002 km² |
| 10 ground | 0.004 km² |
| 20 ground | 0.008 km² |
| 30 ground | 0.012 km² |
| 40 ground | 0.016 km² |
| 50 ground | 0.02 km² |
| 60 ground | 0.024 km² |
| 70 ground | 0.028 km² |
| 80 ground | 0.032 km² |
| 90 ground | 0.036 km² |
| 100 ground | 0.04 km² |
| 250 ground | 0.101 km² |
| 500 ground | 0.202 km² |
| 750 ground | 0.304 km² |
| 1000 ground | 0.405 km² |
| 10000 ground | 4.047 km² |
| 100000 ground | 40.469 km² |
规则