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Pounds-force per square inch

Pound per square inch
Psidial.jpg
A pressure gauge reading in psi (red scale) and kPa (black scale)
Unit information
Unit system Imperial units, US customary units
Unit of Pressure, Stress
Symbol psi or lbf/in2
Unit conversions
1 psi in ... ... is equal to ...
   SI units    6.894757 kPa

The pound per square inch or, more accurately, pound-force per square inch (symbol: lbf/in2; abbreviation: psi) 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:

Therefore, one pound per square inch is approximately 6894.757 Pa.

Now converting the psi to standard atmospheres:


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Wikipedia

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