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


millimeter of water
PSI

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.

millimeter of water (relative to vacuum)
PSI (relative to atmosphere)



More information from the unit converter

How many millimeter of water in 1 PSI? The answer is 703.06957829636. We assume you are converting between millimeter of water [4 °C] and pound/square inch. You can view more details on each measurement unit: millimeter of water or PSI The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.10197162129779 millimeter of water, or 0.00014503773800722 PSI. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between millimeters of water and pounds/square inch. Type in your own numbers in the form to convert the units!



Quick conversion chart of millimeter of water to PSI

1 millimeter of water to PSI = 0.00142 PSI

10 millimeter of water to PSI = 0.01422 PSI

50 millimeter of water to PSI = 0.07112 PSI

100 millimeter of water to PSI = 0.14223 PSI

200 millimeter of water to PSI = 0.28447 PSI

500 millimeter of water to PSI = 0.71117 PSI

1000 millimeter of water to PSI = 1.42233 PSI


Want other units?

You can do the reverse unit conversion from PSI to millimeter of water, or enter any two units below:

Enter two units to convert

From:
To:
 



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!