Millimetres of mercury to PSI Converter
Convert millimetres of mercury (mmHg) to psi (psi) instantly. Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars.
Result
- PSI
- 0.019337 psi
How to use the millimetres of mercury to psi converter
- Enter the millimetres of mercury (mmHg).
- The results update as you type, or press Calculate.
- Read the psi first, then the supporting figures below it.
Formula
PSI = millimetres of mercury × 0.0193367221
Worked example
For example, with these inputs:
- Millimetres of mercury (mmHg): 1
the calculator returns:
- PSI: 0.019337 psi
Millimetres of mercury to PSI table
| Millimetres of mercury | PSI |
|---|---|
| 1 mmHg | 0.019337 psi |
| 2 mmHg | 0.038673 psi |
| 5 mmHg | 0.096684 psi |
| 10 mmHg | 0.193367 psi |
| 20 mmHg | 0.386734 psi |
| 25 mmHg | 0.483418 psi |
| 50 mmHg | 0.966836 psi |
| 100 mmHg | 1.9337 psi |
| 250 mmHg | 4.8342 psi |
| 500 mmHg | 9.6684 psi |
| 1,000 mmHg | 19.3367 psi |
About this conversion
Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
Frequently asked questions
How many psi are in one millimetres of mercury?
1 mmHg = 0.019337 psi.
How do I convert mmHg to psi?
PSI = millimetres of mercury × 0.0193367221.