PSI - pounds per square inch, a unit of pressure expressed in the pounds of force exerted on a square inch.
Foot Pounds is a unit of torque, the amount of force applied in a circular motion at one foot radius in pounds.
This is an apples-tomatoes question, both are red or green fruit, but that's about all they have in common.
The closest answer I can give you is if you want to exert one foot pound on a one foot radius apply one psi on a cylinder with a surface area of 1 inch connected to an arm at one foot and assume no friction.
This of course is not reality, since cylinders this size have a resistive force of about 14 psi, so you'd actually need to supply 15 psi in order to achieve one foot pound of force on your one foot arm.
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There is no direct conversion factor between foot-pounds (ft-lbs) and pounds per square inch (PSI) as they are units of different physical quantities (torque and pressure, respectively). To convert between the two, you would need additional information such as the area over which the force is applied.
Multiply psi by 0.006894759086775369 to convert from psi to MPa. ex: 1000 psi = 1000 x 0.006894759086775369 = 6.89 MPa http://www.chapelsteel.com/psi-mpai.html
To convert Pascal to PSI, multiply the Pascal value by 0.000145038. This conversion factor will give you the equivalent value in PSI.
To convert pressure from pounds per square inch (psi) to kilograms per square centimeter (kg/cm²), you can use the following conversion factor: 1 psi = 0.070307 kg/cm² Simply multiply the pressure in psi by 0.070307 to get the equivalent value in kg/cm².
The conversion factor is used to made this conversion.
To convert psi (pounds per square inch) to grams per centimeter squared, you can use the conversion factor: 1 psi is approximately equal to 70.307 grams per centimeter squared. Multiply the psi value by 70.307 to get the equivalent value in grams per centimeter squared.