Convert water column [millimeter] to pound/square inch [gauge]


water column [millimeter]
lbs/in2

The above form works if you are measuring differential pressure, such as the difference in psi between two points.

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

Note that psig can measure differential pressure in some applications and absolute pressure in others, so you need to know which one fits your calculation.

water column [millimeter] (relative to vacuum)
lbs/in2 (relative to atmosphere)



Did you mean to convert water column [centimeter]
water column [inch]
water column [millimeter]
 to pound/square inch
pound/square inch [gauge]
pound/square inch [absolute]

More information from the unit converter

How many water column [millimeter] in 1 lbs/in2? The answer is 703.06957829636. We assume you are converting between water column [millimeter] and pound/square inch [gauge]. You can view more details on each measurement unit: water column [millimeter] or lbs/in2 The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.10197162129779 water column [millimeter], or 0.00014503773800722 lbs/in2. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between water column and pounds/square inch. Type in your own numbers in the form to convert the units!



Quick conversion chart of water column [millimeter] to lbs/in2

1 water column [millimeter] to lbs/in2 = 0.00142 lbs/in2

10 water column [millimeter] to lbs/in2 = 0.01422 lbs/in2

50 water column [millimeter] to lbs/in2 = 0.07112 lbs/in2

100 water column [millimeter] to lbs/in2 = 0.14223 lbs/in2

200 water column [millimeter] to lbs/in2 = 0.28447 lbs/in2

500 water column [millimeter] to lbs/in2 = 0.71117 lbs/in2

1000 water column [millimeter] to lbs/in2 = 1.42233 lbs/in2


Want other units?

You can do the reverse unit conversion from lbs/in2 to water column [millimeter], or enter any two units below:

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Common pressure conversions


Definition: Pound/square inch

Psig (pound-force per square inch gauge) is a unit of pressure relative to the surrounding atmosphere. By contrast, psia measures pressure relative to a vacuum (such as that in space). At sea level, Earth's atmosphere actually exerts a pressure of 14.7 psi. Humans do not feel this pressure because internal pressure of liquid in their bodies matches the external pressure. If a pressure gauge is calibrated to read zero in space, then at sea level on Earth it would read 14.7 psi. Thus a reading of 30 psig on a tire gauge represents an absolute pressure of 44.7 psi.


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!