Ideal Gas Law Calculator

Solve one missing value in PV = nRT with a fixed educational gas constant.

Important: This calculator is for educational calculations only. It is not laboratory, medical, dosing, chemical handling, mixing, storage, synthesis, pressure-vessel, industrial, environmental, legal, or safety advice.

About the Ideal Gas Law Calculator

The ideal gas law relates four entered state variables in a simplified mathematical model.

How to use it

Enter exactly three positive values.
Use atm, liters, moles and kelvin.
Leave the variable to calculate empty.

Formula

PV = nRT using R = 0.082057 L·atm/(mol·K).

Example

At 1 atm, 22.414 L and 1 mol, the model calculates a temperature near 273.15 K.

Notes

Real gases can deviate from this model. The result is not suitable for pressure vessels, storage, industrial equipment or operational decisions.