Ideal Gas Law Calculator

Using basic theory and this calculator, you can quickly find the answers to your ideal gas law (PV = nRT) equations by solving for any variable in any units.

Enter all the known values. Select the proper units for your inputs and the units you want to get the calculated unknowns in and press Solve.

The ideal gas law is a combination of Boyle's law and Charles's law, and is the equation of state of an hypothetical ideal gas.

  • PV = nRT
  • PV = NkT
J K−1 mol−1
J K−1