Convert pound/square inch to centimeter water [4 °C]


pound/square inch
cm H2O

The above form works if you are measuring differential pressure, such as the difference in psi between two points. It also gives the correct answer for absolute pressure, assuming you are measuring psia, which is the pressure relative to absolute zero vacuum.

If you are measuring relative to vacuum and want to resolve the pressure relative to the atmosphere, then you should use the form below.

pound/square inch (relative to atmosphere)
cm H2O (relative to vacuum)



Did you mean to convert pound/square inch
pound/square inch [gauge]
pound/square inch [absolute]
 to cm H2O

More information from the unit converter

How many pound/square inch in 1 cm H2O? The answer is 0.014223343334285. We assume you are converting between pound/square inch and centimeter water [4 °C]. You can view more details on each measurement unit: pound/square inch or cm H2O The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00014503773800722 pound/square inch, or 0.010197162129779 cm H2O. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between pounds/square inch and centimeters water. Type in your own numbers in the form to convert the units!



Quick conversion chart of pound/square inch to cm H2O

1 pound/square inch to cm H2O = 70.30696 cm H2O

2 pound/square inch to cm H2O = 140.61392 cm H2O

3 pound/square inch to cm H2O = 210.92087 cm H2O

4 pound/square inch to cm H2O = 281.22783 cm H2O

5 pound/square inch to cm H2O = 351.53479 cm H2O

6 pound/square inch to cm H2O = 421.84175 cm H2O

7 pound/square inch to cm H2O = 492.1487 cm H2O

8 pound/square inch to cm H2O = 562.45566 cm H2O

9 pound/square inch to cm H2O = 632.76262 cm H2O

10 pound/square inch to cm H2O = 703.06958 cm H2O


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You can do the reverse unit conversion from cm H2O to pound/square inch, or enter any two units below:

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Common pressure conversions


Definition: Pound/square inch

The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lbf/in²) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.


Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!