Pounds to PSI Calculator
Convert a force in pounds to pressure in psi by dividing by the contact area in square inches — psi = lbf ÷ in².
Pressure (psi)
100
Breakdown
- Kilopascals (kPa)
- 689.48
- Bar
- 6.89
Last updated:
FAQ
How do I convert pounds to psi?
Pounds measure force while psi measures pressure, so you also need the area the force spreads over: psi = lbf ÷ in². A 100 lbf load on a 4 in² pad gives 25 psi.
Is 1 pound per square inch the same as 1 psi?
Yes — psi literally means pound-force per square inch. And since 1 lbf = 4.448 N, 1 psi ≈ 6.895 kPa.
Why can't a single factor convert lb to psi?
Because the same force can produce any pressure depending on area — a stiletto heel vs. a snowshoe. Cross-sectional area must be known, which is why this calculator asks for it.
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