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Convert inch of mercury to bar

Here you can quickly calculate how many bar fit in one inch of mercury.
  • 1 inHg = 0.033864 bar
  • 1 bar = 29.529983 inHg

Inch of mercury to bar conversion table

inch of mercury bar
1 0.033864
2 0.067728
5 0.169319
10 0.338639
20 0.677278
50 1.693194
100 3.386389

Formula to convert inch of mercury to bar

To convert inch of mercury to bar, multiply by 0.033864.

1 inHg = 0.033864 bar
Example: 1 inch of mercury = 0.033864 bar

Common mistakes in pressure conversion

  • Tire pressure is quoted in bar in Europe and psi in the US: 1 bar is about 14.5 psi. The recommended 2.5 bar equals about 36 psi, inflating to '25 psi' on the assumption they match leaves the tire dangerously underinflated. Multiply bar by 14.5 to get psi.
  • One atmosphere is not exactly one bar: 1 atm = 1.01325 bar = 101.325 kPa. There is also the technical atmosphere (1 kgf/cm²) at about 0.981 bar. The ~1% differences rarely matter day to day, but engineering and diving calculations need the right unit.

Quick inch of mercury to/from bar conversion quiz

Score: 0

183 bar equals 5.4e+3 inch of mercury.

Correct answer: 183 bar = 5.4e+3 inch of mercury.

15.4 bar equals 455 inch of mercury.

Correct answer: 15.4 bar = 455 inch of mercury.

24.4 bar equals 1.08e+3 inch of mercury.

Correct answer: 24.4 bar = 721 inch of mercury.

12.8 bar equals 378 inch of mercury.

Correct answer: 12.8 bar = 378 inch of mercury.

21.1 bar equals 935 inch of mercury.

Correct answer: 21.1 bar = 623 inch of mercury.

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