压力是垂直于每个单位区域表面施加的力。它是在pascal（PA）中测量的。
1 psf = 4.882 mmH₂O
1 mmH₂O = 0.205 psf
例子:
将15 每平方英尺转换为水的毫米：
15 psf = 73.236 mmH₂O
| 每平方英尺 | 水的毫米 |
|---|---|
| 0.01 psf | 0.049 mmH₂O |
| 0.1 psf | 0.488 mmH₂O |
| 1 psf | 4.882 mmH₂O |
| 2 psf | 9.765 mmH₂O |
| 3 psf | 14.647 mmH₂O |
| 5 psf | 24.412 mmH₂O |
| 10 psf | 48.824 mmH₂O |
| 20 psf | 97.649 mmH₂O |
| 30 psf | 146.473 mmH₂O |
| 40 psf | 195.297 mmH₂O |
| 50 psf | 244.122 mmH₂O |
| 60 psf | 292.946 mmH₂O |
| 70 psf | 341.77 mmH₂O |
| 80 psf | 390.595 mmH₂O |
| 90 psf | 439.419 mmH₂O |
| 100 psf | 488.243 mmH₂O |
| 250 psf | 1,220.608 mmH₂O |
| 500 psf | 2,441.216 mmH₂O |
| 750 psf | 3,661.824 mmH₂O |
| 1000 psf | 4,882.432 mmH₂O |
| 10000 psf | 48,824.318 mmH₂O |
| 100000 psf | 488,243.182 mmH₂O |
规则