Unit converter
inHg to mb converter
1 inHg = 33.863887 mb. To convert inches of mercury to millibars, multiply by 33.863887. Example: 29.92 inHg = 1,013.25 mb (standard sea-level pressure).
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inHg to mb table
| inHg | mb |
|---|---|
| 28.5 | 965.1208 |
| 29 | 982.0527 |
| 29.2 | 988.8255 |
| 29.5 | 998.9847 |
| 29.7 | 1,005.7574 |
| 29.8 | 1,009.1438 |
| 29.92 | 1,013.2075 |
| 30 | 1,015.9166 |
| 30.1 | 1,019.303 |
| 30.2 | 1,022.6894 |
| 30.3 | 1,026.0758 |
| 30.5 | 1,032.8485 |
About these units
inHg (inches of mercury) and mb (millibars) 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.
mb to inHg · All pressure units · What inHg means
Frequently asked questions
How do I convert inHg to mb?
To convert inches of mercury to millibars, multiply by 33.863887. 1 inHg = 33.863887 mb.
What is standard atmospheric pressure in inHg and mb?
Standard sea-level pressure is 29.9213 inHg, which is 1,013.25 mb.
How many mb is 1 inHg?
1 inHg equals 33.863887 mb, and 1 mb equals 0.02953 inHg.