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 km² = 1,195,990.561 yd²
1 yd² = 8.3613e-7 km²
例子:
将15 平方公里转换为方院：
15 km² = 17,939,858.419 yd²
| 平方公里 | 方院 |
|---|---|
| 0.01 km² | 11,959.906 yd² |
| 0.1 km² | 119,599.056 yd² |
| 1 km² | 1,195,990.561 yd² |
| 2 km² | 2,391,981.122 yd² |
| 3 km² | 3,587,971.684 yd² |
| 5 km² | 5,979,952.806 yd² |
| 10 km² | 11,959,905.612 yd² |
| 20 km² | 23,919,811.225 yd² |
| 30 km² | 35,879,716.837 yd² |
| 40 km² | 47,839,622.45 yd² |
| 50 km² | 59,799,528.062 yd² |
| 60 km² | 71,759,433.675 yd² |
| 70 km² | 83,719,339.287 yd² |
| 80 km² | 95,679,244.899 yd² |
| 90 km² | 107,639,150.512 yd² |
| 100 km² | 119,599,056.124 yd² |
| 250 km² | 298,997,640.311 yd² |
| 500 km² | 597,995,280.621 yd² |
| 750 km² | 896,992,920.932 yd² |
| 1000 km² | 1,195,990,561.242 yd² |
| 10000 km² | 11,959,905,612.425 yd² |
| 100000 km² | 119,599,056,124.249 yd² |
规则