**Full name:** pound/square inch [gauge]

**Plural form:** pounds/square inch

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

**Alternate spelling:** psig

**Category type:** pressure

**Scale factor:** 6894.75728

The SI derived unit for pressure is the pascal.

1 pascal is equal to 0.00014503773800722 pound/square inch [gauge].

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

You can use this form to select from known units:

Psig (pound-force per square inch gauge) is a unit of pressure relative to the surrounding atmosphere. By contrast, psia measures pressure relative to a vacuum (such as that in space). At sea level, Earth's atmosphere actually exerts a pressure of 14.7 psi. Humans do not feel this pressure because internal pressure of liquid in their bodies matches the external pressure. If a pressure gauge is calibrated to read zero in space, then at sea level on Earth it would read 14.7 psi. Thus a reading of 30 psig on a tire gauge represents an absolute pressure of 44.7 psi.

pound/square inch [gauge] to ton/square inch [short]

pound/square inch [gauge] to micrometer of water [4 °C]

pound/square inch [gauge] to centimeter of mercury [0 °C]

pound/square inch [gauge] to inch of air [0 °C]

pound/square inch [gauge] to megabar

pound/square inch [gauge] to femtopascal

pound/square inch [gauge] to nanobar

pound/square inch [gauge] to water column [millimeter]

pound/square inch [gauge] to kilogram-force/square metre

pound/square inch [gauge] to inch water [4 °C]