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 ft² = 0 ground
1 ground = 4,356.006 ft²
例子:
将15 平方英尺转换为地面：
15 ft² = 0.003 ground
| 平方英尺 | 地面 |
|---|---|
| 0.01 ft² | 2.2957e-6 ground |
| 0.1 ft² | 2.2957e-5 ground |
| 1 ft² | 0 ground |
| 2 ft² | 0 ground |
| 3 ft² | 0.001 ground |
| 5 ft² | 0.001 ground |
| 10 ft² | 0.002 ground |
| 20 ft² | 0.005 ground |
| 30 ft² | 0.007 ground |
| 40 ft² | 0.009 ground |
| 50 ft² | 0.011 ground |
| 60 ft² | 0.014 ground |
| 70 ft² | 0.016 ground |
| 80 ft² | 0.018 ground |
| 90 ft² | 0.021 ground |
| 100 ft² | 0.023 ground |
| 250 ft² | 0.057 ground |
| 500 ft² | 0.115 ground |
| 750 ft² | 0.172 ground |
| 1000 ft² | 0.23 ground |
| 10000 ft² | 2.296 ground |
| 100000 ft² | 22.957 ground |
规则