Apply the ideal gas law to find pressure, volume, temperature or amount of gas.
The ideal gas law relates all four state variables. At standard temperature and pressure one mole occupies 22.4 litres, which is the figure the defaults reproduce. Real gases deviate from ideal behaviour at high pressure and low temperature, where intermolecular forces and molecular volume stop being negligible.
Ideal Gas Law
p V = n R T, with R = 8.314 J/mol·K
p V = n R T, with R = 8.314 J/mol·K The ideal gas law relates all four state variables. At standard temperature and pressure one mole occupies 22.4 litres, which is the figure the defaults reproduce.
Real gases deviate from ideal behaviour at high pressure and low temperature, where intermolecular forces and molecular volume stop being negligible.
This calculator takes 4 inputs: Pressure, Volume, Temperature, Molar mass of the gas. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.