Ideal Gas Law Calculator

Calculate

Pressure Volume Amount (mol) Temperature

How to use the ideal gas law calculator

Choose what to calculate: pressure, volume, amount or temperature.
Type the other three values and choose their units.
The answer appears in the unit you choose.

Frequently asked questions

Which value of R is used?

8.314 J/(mol·K), which is 0.08206 L·atm/(mol·K). Units are converted before and after, so you do not need to convert them yourself.

What is the volume of one mole of gas?

About 22.4 L at 0 °C and 1 atm, and about 24.5 L at 25 °C.

Where does PV = nRT come from?

From particles bouncing off the walls of a container. The Ideal Gas Simulator shows it: change the temperature, volume or number of particles and watch the measured pressure follow the law.

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Exam courses

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Guides

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