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Convert inch of mercury to hectopascal

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

Inch of mercury to hectopascal conversion table

inch of mercury hectopascal
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 hectopascal

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

1 inHg = 33.863887 hPa
Example: 1 inch of mercury = 33.863887 hectopascal

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 hectopascal conversion quiz

Score: 0

17.9 hectopascal equals 0.529 inch of mercury.

Correct answer: 17.9 hectopascal = 0.529 inch of mercury.

219 inch of mercury equals 7.42e+3 hectopascal.

Correct answer: 219 inch of mercury = 7.42e+3 hectopascal.

140 hectopascal equals 4.13 inch of mercury.

Correct answer: 140 hectopascal = 4.13 inch of mercury.

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