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 = 0.488 cmH₂O
1 cmH₂O = 2.048 psf
例子:
将15 每平方英尺转换为水的厘米：
15 psf = 7.324 cmH₂O
| 每平方英尺 | 水的厘米 |
|---|---|
| 0.01 psf | 0.005 cmH₂O |
| 0.1 psf | 0.049 cmH₂O |
| 1 psf | 0.488 cmH₂O |
| 2 psf | 0.976 cmH₂O |
| 3 psf | 1.465 cmH₂O |
| 5 psf | 2.441 cmH₂O |
| 10 psf | 4.882 cmH₂O |
| 20 psf | 9.765 cmH₂O |
| 30 psf | 14.647 cmH₂O |
| 40 psf | 19.53 cmH₂O |
| 50 psf | 24.412 cmH₂O |
| 60 psf | 29.295 cmH₂O |
| 70 psf | 34.177 cmH₂O |
| 80 psf | 39.059 cmH₂O |
| 90 psf | 43.942 cmH₂O |
| 100 psf | 48.824 cmH₂O |
| 250 psf | 122.061 cmH₂O |
| 500 psf | 244.122 cmH₂O |
| 750 psf | 366.182 cmH₂O |
| 1000 psf | 488.243 cmH₂O |
| 10000 psf | 4,882.432 cmH₂O |
| 100000 psf | 48,824.318 cmH₂O |
规则