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Convert inch of water to technical atmosphere

Here you can quickly calculate how many technical atmosphere fit in one inch of water.
  • 1 inH₂O = 0.00254 at
  • 1 at = 393.700787 inH₂O

Inch of water to technical atmosphere conversion table

inch of water technical atmosphere
1 0.00254
2 0.00508
5 0.0127
10 0.0254
20 0.0508
50 0.127
100 0.254

Inch of water to technical atmosphere formula

To convert inch of water to technical atmosphere, multiply by 0.00254.

1 inH₂O = 0.00254 at
Example: 1 inch of water = 0.00254 technical atmosphere

Common pressure conversion mistakes

  • 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 technical atmosphere conversion quiz

Score: 0

217 inch of water equals 0.551 technical atmosphere.

Correct answer: 217 inch of water = 0.551 technical atmosphere.

243 technical atmosphere equals 9.57e+4 inch of water.

Correct answer: 243 technical atmosphere = 9.57e+4 inch of water.

100 inch of water equals 0.254 technical atmosphere.

Correct answer: 100 inch of water = 0.254 technical atmosphere.

22.7 inch of water equals 0.0577 technical atmosphere.

Correct answer: 22.7 inch of water = 0.0577 technical atmosphere.

More pressure conversions