**Full name:** pound/square inch

**Plural form:** pounds/square inch

**Symbol:** lb/in^{2}

**Alternate spelling:** psi

**Category type:** pressure

**Scale factor:** 6894.75728

The SI derived unit for pressure is the pascal.

1 pascal is equal to 0.000145037738007 psi.

Valid units must be of the **pressure** type.

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The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lbf/in²) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.

psi to foot of air [0 °C]

psi to picopascal

psi to hectopascal

psi to ton/square foot [short]

psi to millipascal

psi to micron mercury [0 °C]

psi to kilopond/square centimetre

psi to inch water [4 °C]

psi to barad