# Pound per square inch conversions

pressure conversions » pound per square inch conversionsThe pound per square inch conversion selector on this page selects the pressure/stress measurement unit to convert to starting from pounds per square inch (psi). To make a conversion starting from a unit of pressure other than pound per square inch, simply click on the "Reset" button.

## What is pound per square inch?

The **pound per square inch** (or **pound-force per square inch**) is a unit of pressure equal to 6,894.757 pascals (1 psi = 6,894.757 Pa), the SI derived unit of pressure. It is also equal to 68.9475729 hectopascals (hPa), or 6.894757 kilopascals (kPa), or about 0.0680459 atmospheres (atm), or 0.0689475 bars (bar), or 51.7149 millimeters of mercury at 0 °C (mmHg), or 27.6799 inches of water at 4 °C (inH2O), or 144 pounds per square foot (psf) or 51.7149 torr (Torr).

The pound per square inch is the pressure that results when a force of one pound-force is applied (uniformly and perpendicularly) on a surface of one square inch. The pound-force (lbf) is a unit of force while the square inch (sq in) is a unit of area.

The pound per square inch (psi) is commonly used in the United States as a unit of pressure.

*Note:*

The SI is an abbreviation for the International System of Units.

*Symbol:*

psi

*Plural:*

pounds per square inch

*Also known under the name of:*

pound-force per square inch (plural: pounds-force per square inch, abbreviation: lbf/sq in, lbf/in²)

## Pound per square inch conversions: links

A compehensive list with conversions from pounds per square inch to other (metric, imperial, or customary) pressure and stress measurement units is shown below.

- pound per square inch to atmosphere (standard) (psi to atm)
- pound per square inch to atmosphere (technical) (psi to at)
- pound per square inch to bar (psi to bar)
- pound per square inch to barye (psi to Ba)
- pound per square inch to centibar (psi to cbar)
- pound per square inch to centimeter of mercury (psi to cmHg)
- pound per square inch to centimeter of water (psi to cmH2O)
- pound per square inch to decibar (psi to dbar)
- pound per square inch to dyne per square centimeter (psi to dyn/cm²)
- pound per square inch to gigabar (psi to Gbar)
- pound per square inch to gigapascal (psi to GPa)
- pound per square inch to hectopascal (psi to hPa)
- pound per square inch to inch of mercury (psi to inHg)
- pound per square inch to inch of water (psi to inH2O)
- pound per square inch to kilobar (psi to kbar)
- pound per square inch to kilogram-force per square centimeter (psi to kgf/cm²)
- pound per square inch to kilogram-force per square millimeter (psi to kgf/mm²)
- pound per square inch to kilopascal (psi to kPa)
- pound per square inch to kip per square inch (psi to ksi)
- pound per square inch to megabar (psi to Mbar)
- pound per square inch to megapascal (psi to MPa)
- pound per square inch to millibar (psi to mbar)
- pound per square inch to millimeter of mercury (psi to mmHg)
- pound per square inch to millimeter of water (psi to mmH2O)
- pound per square inch to millipascal (psi to mPa)
- pound per square inch to newton per square meter (psi to N/m²)
- pound per square inch to newton per square millimeter (psi to N/mm²)
- pound per square inch to pascal (psi to Pa)
- pound per square inch to pieze (psi to pz)
- pound per square inch to pound per square foot (psi to psf)
- pound per square inch to torr (psi to Torr)