# Pressure

Pressure is the amount of force acting per unit area. The symbol of pressure is p or P.

Pressure is expressed in Various units. Some of these derive from a unit of force divided by a unit of area; the SI unit of pressure, the pascal (Pa), for example, is one newton per square metre; similarly, the pound-force per square inch (psi) is the traditional unit of pressure in the imperial and US customary systems.

Pressure may also be expressed in terms of standard atmospheric pressure; the atmosphere (atm) is equal to this pressure and the torr is defined as 1⁄760 of this. Manometric units such as the centimetre of water, millimetre of mercury and inch of mercury are used to express pressures in terms of the height of column of a particular fluid in a manometer.

vCalc's Pressure folder contains pressure unit conversions

## Pressure Equations

• "Dyn"/ "cm"^2-to-Torr
• "Dyn/cm"^2-to-"ft"_"H2O"
• "Dyn/cm"^2-to-"in"_"Hg"
• "Dyn/cm"^2-to-at
• "Dyn/cm"^2-to-atm
• "Dyn/cm"^2-to-Bar
• "Dyn/cm"^2-to-psi
• "ft"_"H2O"-to-"in"_"Hg"
• "ft"_"H2O"-to-atm
• "ft"_"H2O"-to-ksm
• "ft"_"H2O"-to-psi
• "in"_"Hg"-to-"ft"_"H2O"
• "in"_"Hg"-to-atm
• "in"_"Hg"-to-Pa
• "in"_"Hg"-to-psi
• at-to-atm
• atm-to-"ft"_"H2O"
• atm-to-"in"_"Hg"
• atm-to-at
• atm-to-Bar
• Bar-to-Pa
• Bar-to-psi
• Bar-to-Torr
• Boyles Law (final pressure)
• Boyles Law (final volume)
• Boyles Law (initial pressure)
• Boyles Law (initial volume)
• Change in Pressure
• Force (pressure)
• Ideal gas law (pressure)
• Ideal gas law (temperature)
• Ideal gas law (volume)
• kPa to mmHg
• kPa-to-psi
• ksc-to-PSI
• ksm-to-"ft"_"H2O"
• Pa-to-g/(cm *s^2)
• Pa-to-psi
• Pressure
• Pressure (Energy/Volume)
• psi-to-"ft"_"H2O"
• psi-to-"in"_"Hg"
• psi-to-Bar
• psi-to-kPa
• psi-to-ksc
• psi-to-Pa
• Reduced Pressure
• Reduced Specific Volume
• Reduced Temperature
• Stress (Axial) in Cylinder
• Stress (Axial) out Cylinder
• Stress (Tangential) in Cylinder
• Stress (Tangential) out Cylinder
• Torr-to-Bar
• Absolute Pressure (any gravity)
• Absolute Pressure (Barometer Approximation)
• Actuator Fluid Motor Torque (Flow Rate, Pressure & RPM)
• Actuator Fluid Motor Torque (Pressure & Displacement)
• Air Pressure at Altitude
• Atmospheres to Grams per Square Centimeter
• Atmospheres to Pascals
• Atmospheres to Pounds per Square Foot
• Atmospheres to Pounds per Square Inch
• Atmospheres to Torrs
• Bar to Dynes per Square Centimeter
• Bar to Grams per Square Centimeter
• Barlow's formula
• Bars to Atmosphere
• Detonation Pressure
• Electrostatic Pressure
• Entalpía
• Enthalpy
• Euler Number
• Ideal gas law (solved for moles)
• Ideal gas law (solved for pressure)
• Ideal gas law (solved for temperature)
• Ideal gas law (solved for volume)
• Kinetic Energy (version a)
• La Ley de Boyle (el volumen final)
• La Ley de Boyle (el volumen inicial)
• La Ley de Boyle (la presion final)
• La Ley de Boyle (la presion inicial )
• La Ley de Gas Ideal (para resolver el volumen)
• La Ley de Gas Ideal (para resolver la presion)
• La Ley de Gas Ideal (para resolver la temperatura)
• La Ley de Gas Ideal (para resolver mol)
• La Ley de Raoult
• Pa-to-Bar
• Pa-to-inHg
• Peak Dynamic Pressure
• Peak Reflected Pressure
• Peng-Robinson Equation of State
• Pump Torque (Pressure & CIPR Method)
• Raoult's Law
• Scaled Pressure at Altitude 'z'
• Trabajo
• Work