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Convert inch of water to millimeter of mercury

Here you can quickly calculate how many millimeter of mercury fit in one inch of water.
  • 1 inH₂O = 1.86832 mmHg
  • 1 mmHg = 0.53524 inH₂O

Inch of water to millimeter of mercury conversion table

inch of water millimeter of mercury
1 1.86832
2 3.73664
5 9.341601
10 18.683202
20 37.366404
50 93.41601
100 186.83202

Formula to convert inch of water to millimeter of mercury

To convert inch of water to millimeter of mercury, multiply by 1.86832.

1 inH₂O = 1.86832 mmHg
Example: 1 inch of water = 1.86832 millimeter of mercury

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.

Quick inch of water to/from millimeter of mercury conversion quiz

Score: 0

0.9 inch of water equals 1.68 millimeter of mercury.

Correct answer: 0.9 inch of water = 1.68 millimeter of mercury.

27 inch of water equals 50.4 millimeter of mercury.

Correct answer: 27 inch of water = 50.4 millimeter of mercury.

2.2 inch of water equals 4.73 millimeter of mercury.

Correct answer: 2.2 inch of water = 4.11 millimeter of mercury.

45 inch of water equals 92.5 millimeter of mercury.

Correct answer: 45 inch of water = 84.1 millimeter of mercury.

More conversions in pressure