Home › Calculators › Thermodynamics › Gas Laws Calculator

Gas Laws Calculator

Use the combined gas law to find a gas's new pressure, volume or temperature after one of those quantities has changed in a sealed container.

P₁V₁ ÷ T₁ = P₂V₂ ÷ T₂

For a fixed amount of gas, pressure times volume divided by absolute temperature stays constant through any change.

Initial pressure (Pa)

Initial volume (m³)

Initial temperature (K)

Final pressure (Pa)

Final volume (m³)

Final temperature (K)

Final pressure

— Pa

The calculation runs entirely in your browser — no data leaves your device. Change any number and the answer updates instantly.