`P = ( "n" *"R"* "T" )/ "v" `

Enter a value for all fields

The Ideal Gas Law for Pressure calculator computes the pressure (P) of a gas based on the temperature (T), volume (V) and number of moles (n) using the Ideal Gas Law and the universal gas constant (R) .   

INSTRUCTIONS: Choose units and enter the following:

• (n) Moles (amount of substance or gas)
• (T) Temperature
• (V) Volume

Gas Pressure (P):  The calculator returns the pressure in pascals (Pa).  However, this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

The ideal gas law  is the equation of state of a hypothetical ideal gas. It is a good approximation to the behavior of many gases under many conditions.  The ideal gas law is often represented in its common form: 

                             PV = nRT

where:

• P - pressure of the gas
• T - temperature of the gas
• n - amount of the gas, typically specified in moles (mol)
• V - volume of the gas
• R - universal gas constant

This calculator solves the Ideal Gas Law equation for pressure (P).