pound-force per square inch-lbf/in²

Pound-force per square inch (lbf/in²) is a unit of pressure commonly used in the imperial and US customary systems. It represents the force exerted by one pound-force distributed over an area of one square inch. This unit is often used interchangeably with psi (pounds per square inch) in many contexts, but it explicitly denotes the use of pound-force as the unit of force.