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Convert inch of mercury to millibar

Here you can quickly calculate how many millibar fit in one inch of mercury.
  • 1 inHg = 33.863887 mbar
  • 1 mbar = 0.02953 inHg

Inch of mercury to millibar conversion table

inch of mercury millibar
1 33.863887
2 67.727773
5 169.319434
10 338.638867
20 677.277735
50 1693.194337
100 3386.388675

Formula to convert inch of mercury to millibar

To convert inch of mercury to millibar, multiply by 33.863887.

1 inHg = 33.863887 mbar
Example: 1 inch of mercury = 33.863887 millibar

Common mistakes in pressure conversion

  • Blood pressure uses mmHg (120/80) and weather reports use hPa (around 1,013), different units that must not be mixed: 760 mmHg = 1,013.25 hPa. One mmHg is about 1.33 hPa.
  • Hectopascals and millibars are exactly the same size: 1 hPa = 1 mbar. A chart showing 1,013 mbar and one showing 1,013 hPa agree perfectly, no conversion needed. Meteorology simply renamed the unit.

Quick inch of mercury to/from millibar conversion quiz

Score: 0

217 inch of mercury equals 1.1e+4 millibar.

Correct answer: 217 inch of mercury = 7.35e+3 millibar.

19.5 millibar equals 1.15 inch of mercury.

Correct answer: 19.5 millibar = 0.576 inch of mercury.

22.8 millibar equals 0.673 inch of mercury.

Correct answer: 22.8 millibar = 0.673 inch of mercury.

20 millibar equals 0.591 inch of mercury.

Correct answer: 20 millibar = 0.591 inch of mercury.

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