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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

Inch of mercury to bar formula

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 pressure conversion mistakes

  • 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 and bar conversion quiz

Score: 0

2 bar equals 88.6 inch of mercury.

Correct answer: 2 bar = 59.1 inch of mercury.

2.4 inch of mercury equals 0.0813 bar.

Correct answer: 2.4 inch of mercury = 0.0813 bar.

241 inch of mercury equals 8.16 bar.

Correct answer: 241 inch of mercury = 8.16 bar.

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