## Measurement unit: pound/square inch

**Full name:** pound/square inch

**Plural form:** pounds/square inch

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

**Alternate spelling:** psi

**Category type:** pressure

**Scale factor:** 6894.75728

## Similar units

## SI unit: pascal

The SI derived unit for pressure is the pascal.

1 pascal is equal to 0.00014503773800722 pound/square inch.

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

You can use this form to select from known units:

## Definition: Pound/square inch

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.

## Sample conversions: pound/square inch