Question: how many lbf/in2 in psi?
Answer: 1 PSI lbf/in2 = 1 psi. 1 x 1 psi = 1 Psi. Definition: In relation to the base unit of [pressure] => (pascals), 1 Pound Force Per Square Inch (PSI lbf/in2) is equal to 6894.7572932 pascals, while 1 Psi (psi) = 6894.7572932 pascals.