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Convert standard atmosphere to centimeter of water

Here you can quickly calculate how many centimeter of water fit in one standard atmosphere.
  • 1 atm = 1033.227453 cmH₂O
  • 1 cmH₂O = 0.000968 atm

Standard atmosphere to centimeter of water conversion table

standard atmosphere centimeter of water
1 1033.227453
2 2066.454906
5 5166.137264
10 10332.274528
20 20664.549056
50 51661.37264
100 103322.74528

Formula to convert standard atmosphere to centimeter of water

To convert standard atmosphere to centimeter of water, multiply by 1033.227453.

1 atm = 1033.227453 cmH₂O
Example: 1 standard atmosphere = 1033.227453 centimeter of water

Common mistakes in pressure conversion

  • 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 standard atmosphere to/from centimeter of water conversion quiz

Score: 0

20 centimeter of water equals 0.194 standard atmosphere.

Correct answer: 20 centimeter of water = 0.0194 standard atmosphere.

10 centimeter of water equals 0.00194 standard atmosphere.

Correct answer: 10 centimeter of water = 0.00968 standard atmosphere.

100 standard atmosphere equals 1.03e+6 centimeter of water.

Correct answer: 100 standard atmosphere = 1.03e+5 centimeter of water.

20 centimeter of water equals 0.0194 standard atmosphere.

Correct answer: 20 centimeter of water = 0.0194 standard atmosphere.

More conversions in pressure