Unit converter
inHg to psi converter
1 inHg = 0.491154 psi. To convert inches of mercury to pounds per square inch, multiply by 0.491154. Example: 29.92 inHg = 14.696 psi (standard sea-level pressure).
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inHg to psi table
| inHg | psi |
|---|---|
| 1 | 0.4912 |
| 2 | 0.9823 |
| 5 | 2.4558 |
| 10 | 4.9115 |
| 15 | 7.3673 |
| 20 | 9.8231 |
| 25 | 12.2789 |
| 28 | 13.7523 |
| 29 | 14.2435 |
| 29.92 | 14.6953 |
| 30 | 14.7346 |
| 31 | 15.2258 |
About these units
inHg (inches of mercury) and psi (pounds per square inch) both measure pressure: force spread over an area.
- inHg — height of a mercury column in inches. Used for weather and aircraft altimeters in the US.
- hPa / mb — hectopascals, identical to millibars. The standard weather unit worldwide.
- mmHg — millimeters of mercury, also called torr. Used for weather in some countries and for blood pressure.
- kPa — kilopascals (10 hPa). Common in Canada and engineering.
- psi — pounds per square inch. Tires, compressors, vacuum gauges.
psi to inHg · All pressure units · What inHg means
Frequently asked questions
How do I convert inHg to psi?
To convert inches of mercury to pounds per square inch, multiply by 0.491154. 1 inHg = 0.491154 psi.
What is standard atmospheric pressure in inHg and psi?
Standard sea-level pressure is 29.9213 inHg, which is 14.6959 psi.
How many psi is 1 inHg?
1 inHg equals 0.491154 psi, and 1 psi equals 2.036021 inHg.