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 mmHg = 1.333 hPa
1 hPa = 0.75 mmHg
例子:
将15 汞的毫米转换为海毛：
15 mmHg = 19.998 hPa
| 汞的毫米 | 海毛 |
|---|---|
| 0.01 mmHg | 0.013 hPa |
| 0.1 mmHg | 0.133 hPa |
| 1 mmHg | 1.333 hPa |
| 2 mmHg | 2.666 hPa |
| 3 mmHg | 4 hPa |
| 5 mmHg | 6.666 hPa |
| 10 mmHg | 13.332 hPa |
| 20 mmHg | 26.664 hPa |
| 30 mmHg | 39.997 hPa |
| 40 mmHg | 53.329 hPa |
| 50 mmHg | 66.661 hPa |
| 60 mmHg | 79.993 hPa |
| 70 mmHg | 93.325 hPa |
| 80 mmHg | 106.658 hPa |
| 90 mmHg | 119.99 hPa |
| 100 mmHg | 133.322 hPa |
| 250 mmHg | 333.305 hPa |
| 500 mmHg | 666.61 hPa |
| 750 mmHg | 999.915 hPa |
| 1000 mmHg | 1,333.22 hPa |
| 10000 mmHg | 13,332.2 hPa |
| 100000 mmHg | 133,322 hPa |
规则