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Glossary » Units » Pressure » Pound Force Per Square Inch

Pound Force Per Square Inch (psi, PSI, lbf/in²) is a unit in the category of Pressure. It is also known as pound force/square inch, pound per square inch. This unit is commonly used in the UK, US, FPS unit systems. Pound Force Per Square Inch (psi, PSI, lbf/in²) has a dimension of ML^-1T^-2 where M is mass, L is length, and T is time. It can be converted to the corresponding standard SI unit Pa by multiplying its value by a factor of 6894.757292.

Note that the seven base dimensions are M (Mass), L (Length), T (Time), Q (Temperature), N (Aamount of Substance), I (Electric Current), and J (Luminous Intensity).

Other units in the category of Pressure include Atmosphere (metric) (at), Atmosphere (standard) (atm), Bar (bar), Barad (barad), Barye, CentiHg (0°C), Centimeter of Mercury (0°C) (cmHg (0 °C)), Centimeter of Water (4°C) (cmH₂O), Dyne Per Square Centimeter (dyn/cm²), Foot of Water (4°C) (ft H₂O), Gigapascal (GPa), Hectopascal (hPa), Inch of Mercury (0°C) (inHg (0 °C)), Inch of Mercury (15.56°C) (inHg (15.56 °C)), Inch of Water (15.56°C) (inH₂O (15.56 °C)), Inch of Water (4°C) (inH₂O (4 °C)), Kilogram Force Per Square Centimeter (kgf/cm²), Kilogram Force Per Square Decimeter (kgf/dm²), Kilogram Force Per Square Meter (kgf/m²), Kilogram Force Per Square Millimeter (kgf/mm²), Kilopascal (kPa), Kilopound Force Per Square Inch (kip/in², ksi, KSI), Megapascal (MPa), Meter of Water (15.56°C) (mH₂O, mCE (15.56 °C)), Meter of Water (4°C) (mH₂O, mCE (4 °C)), Microbar (barye, Barrie) (µbar), Micron of Mercury (millitorr) (µHg (0 °C)), Millibar (mbar), Millimeter of Mercury (0°C) (mmHg, torr, Torr (0 °C)), Millimeter of Water (15.56°C) (mmH₂O, mmCE (15.56 °C)), Millimeter of Water (4°C) (mmH₂O, mmCE (4 °C)), Millitorr (mtorr), Newton Per Square Meter (N/m²), Ounce Force (av.) Per Square Inch (ozf/in², osi), Pascal (Pa, N/m²), Pound Force Per Square Foot (lbf/ft²), Poundal Per Square Foot (pdl/ft²), Poundal Per Square Inch (pdl/in²), Standard Atmosphere (atm), Ton Force (long) Per Square Foot (tonf/ft² (UK)), Ton Force (long) Per Square Inch (tonf/in² (UK)), Ton Force (metric) Per Square Centimeter (tonf/cm² (metric)), Ton Force (metric) Per Square Meter (tonf/m² (metric)), Ton Force (short) Per Square Foot (tonf/ft² (US)), Ton Force (short) Per Square Inch (tonf/in² (US)), and Torr (torr).