Convert newton/square millimetre to pound/square inch


newton/square millimeter
lb/in^2

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.

newton/square millimeter (relative to vacuum)
lb/in^2 (relative to atmosphere)



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

More information from the unit converter

How many newton/square millimeter in 1 lb/in^2? The answer is 0.00689475728. We assume you are converting between newton/square millimetre and pound/square inch. You can view more details on each measurement unit: newton/square millimeter or lb/in^2 The SI derived unit for pressure is the pascal. 1 pascal is equal to 1.0E-6 newton/square millimeter, or 0.00014503773800722 lb/in^2. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between newtons/square millimeter and pounds/square inch. Type in your own numbers in the form to convert the units!



Quick conversion chart of newton/square millimeter to lb/in^2

1 newton/square millimeter to lb/in^2 = 145.03774 lb/in^2

2 newton/square millimeter to lb/in^2 = 290.07548 lb/in^2

3 newton/square millimeter to lb/in^2 = 435.11321 lb/in^2

4 newton/square millimeter to lb/in^2 = 580.15095 lb/in^2

5 newton/square millimeter to lb/in^2 = 725.18869 lb/in^2

6 newton/square millimeter to lb/in^2 = 870.22643 lb/in^2

7 newton/square millimeter to lb/in^2 = 1015.26417 lb/in^2

8 newton/square millimeter to lb/in^2 = 1160.3019 lb/in^2

9 newton/square millimeter to lb/in^2 = 1305.33964 lb/in^2

10 newton/square millimeter to lb/in^2 = 1450.37738 lb/in^2


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You can do the reverse unit conversion from lb/in^2 to newton/square millimeter, 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!