What is ksi unit?

The kilopound per square inch (ksi) is a scaled unit derived from psi, equivalent to a thousand psi (1000 lbf/in2). The ksi [ksi] to psi [psi] conversion table and conversion steps are also listed. The ksi pressure unit is derived from the psi pressure unit by multiplying it by 1,000, and the full name is kilopounds force per square inch. A kip per square inch (ksi, kip/in²) is a unit of pressure, stress, Young's modulus and ultimate tensile strength in the US Customary Units and British Imperial Units. PRESSURE Units Conversion ksi to psi · 1 ksi = 1000 psi · 2 ksi = 2000 psi · 3 ksi = 3000 psi · 4 ksi = 4000 psi · 5 ksi = 5000 psi · 6 ksi = 6000 psi · 7 ksi = 7000 psi.