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Convert bar to inch of water

Here you can quickly calculate how many inch of water fit in one bar.
  • 1 bar = 401.463076 inH₂O
  • 1 inH₂O = 0.002491 bar

Bar to inch of water conversion table

bar inch of water
1 401.463076
2 802.926152
5 2007.31538
10 4014.63076
20 8029.26152
50 20073.153799
100 40146.307598

Bar to inch of water formula

To convert bar to inch of water, multiply by 401.463076.

1 bar = 401.463076 inH₂O
Example: 1 bar = 401.463076 inch of water

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 bar and inch of water conversion quiz

Score: 0

16.4 inch of water equals 0.0613 bar.

Correct answer: 16.4 inch of water = 0.0409 bar.

187 bar equals 7.51e+4 inch of water.

Correct answer: 187 bar = 7.51e+4 inch of water.

16.5 bar equals 1.32e+4 inch of water.

Correct answer: 16.5 bar = 6.62e+3 inch of water.

21 bar equals 8.43e+3 inch of water.

Correct answer: 21 bar = 8.43e+3 inch of water.

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