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


foot of water
lbs/in2

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.

foot of water (relative to vacuum)
lbs/in2 (relative to atmosphere)



Did you mean to convert foot of water to pound/square inch
pound/square inch [gauge]
pound/square inch [absolute]

More information from the unit converter

How many foot of water in 1 lbs/in2? The answer is 2.3066587368787. We assume you are converting between foot of water [4 °C] and pound/square inch. You can view more details on each measurement unit: foot of water or lbs/in2 The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00033455256555148 foot of water, 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 feet of water and pounds/square inch. Type in your own numbers in the form to convert the units!



Quick conversion chart of foot of water to lbs/in2

1 foot of water to lbs/in2 = 0.43353 lbs/in2

5 foot of water to lbs/in2 = 2.16764 lbs/in2

10 foot of water to lbs/in2 = 4.33528 lbs/in2

20 foot of water to lbs/in2 = 8.67055 lbs/in2

30 foot of water to lbs/in2 = 13.00583 lbs/in2

40 foot of water to lbs/in2 = 17.3411 lbs/in2

50 foot of water to lbs/in2 = 21.67638 lbs/in2

75 foot of water to lbs/in2 = 32.51456 lbs/in2

100 foot of water to lbs/in2 = 43.35275 lbs/in2


Want other units?

You can do the reverse unit conversion from lbs/in2 to foot of water, 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!