**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 0.00014503773800722 psi.

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

You can use this form to select from known units:

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 inch of water [4 °C]

psi to kilogram-force/square millimetre

psi to megabar

psi to foot of air [0 °C]

psi to yoctopascal

psi to terabar

psi to inch of mercury [0 °C]

psi to centimeter mercury [0 °C]

psi to micrometer of mercury [0 °C]