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


lb/in^2
inch water

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.

lb/in^2 (relative to atmosphere)
inch water (relative to vacuum)



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

More information from the unit converter

How many lb/in^2 in 1 inch water? The answer is 0.036127291827354. We assume you are converting between pound/square inch and inch water [4 °C]. You can view more details on each measurement unit: lb/in^2 or inch water The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00014503773800722 lb/in^2, or 0.0040146307866177 inch water. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between pounds/square inch and inches water. Type in your own numbers in the form to convert the units!



Quick conversion chart of lb/in^2 to inch water

1 lb/in^2 to inch water = 27.6799 inch water

2 lb/in^2 to inch water = 55.35981 inch water

3 lb/in^2 to inch water = 83.03971 inch water

4 lb/in^2 to inch water = 110.71962 inch water

5 lb/in^2 to inch water = 138.39952 inch water

6 lb/in^2 to inch water = 166.07943 inch water

7 lb/in^2 to inch water = 193.75933 inch water

8 lb/in^2 to inch water = 221.43924 inch water

9 lb/in^2 to inch water = 249.11914 inch water

10 lb/in^2 to inch water = 276.79905 inch water


Want other units?

You can do the reverse unit conversion from inch water to lb/in^2, 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!