Convert inch of water to bar
Here you can quickly calculate how many bar fit in one inch of water.
Only numbers, with a single decimal separator.
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- 1 inH₂O = 0.002491 bar
- 1 bar = 401.463076 inH₂O
Example: inch of water to bar
- 1 inch of water = 0.002491 bar
Inch of water to bar conversion table
| inch of water | bar |
|---|---|
| 1 | 0.002491 |
| 2 | 0.004982 |
| 5 | 0.012454 |
| 10 | 0.024909 |
| 20 | 0.049818 |
| 50 | 0.124544 |
| 100 | 0.249089 |
Inch of water to bar formula
To convert inch of water to bar, multiply by 0.002491.
1 inH₂O = 0.002491 bar
Example: 1 inch of water = 0.002491 bar
Common pressure conversion mistakes
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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.
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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 water and bar conversion quiz
Score:
0
99 inch of water equals 0.123 bar.
Correct answer: 99 inch of water = 0.247 bar.
20.4 inch of water equals 0.0508 bar.
Correct answer: 20.4 inch of water = 0.0508 bar.
8 bar equals 4.82e+3 inch of water.
Correct answer: 8 bar = 3.21e+3 inch of water.