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 hPa = 1.02 cmH₂O
1 cmH₂O = 0.981 hPa
例子:
将15 海毛转换为水的厘米：
15 hPa = 15.296 cmH₂O
| 海毛 | 水的厘米 |
|---|---|
| 0.01 hPa | 0.01 cmH₂O |
| 0.1 hPa | 0.102 cmH₂O |
| 1 hPa | 1.02 cmH₂O |
| 2 hPa | 2.039 cmH₂O |
| 3 hPa | 3.059 cmH₂O |
| 5 hPa | 5.099 cmH₂O |
| 10 hPa | 10.197 cmH₂O |
| 20 hPa | 20.394 cmH₂O |
| 30 hPa | 30.591 cmH₂O |
| 40 hPa | 40.789 cmH₂O |
| 50 hPa | 50.986 cmH₂O |
| 60 hPa | 61.183 cmH₂O |
| 70 hPa | 71.38 cmH₂O |
| 80 hPa | 81.577 cmH₂O |
| 90 hPa | 91.774 cmH₂O |
| 100 hPa | 101.972 cmH₂O |
| 250 hPa | 254.929 cmH₂O |
| 500 hPa | 509.858 cmH₂O |
| 750 hPa | 764.787 cmH₂O |
| 1000 hPa | 1,019.716 cmH₂O |
| 10000 hPa | 10,197.162 cmH₂O |
| 100000 hPa | 101,971.621 cmH₂O |
规则