Combined Gas Law

Solve P₁V₁/T₁ = P₂V₂/T₂ for the one unknown pressure, volume or temperature, free online.

P₁

V₁

T₁ (K)

P₂ (blank to solve) (optional)

V₂ (blank to solve) (optional)

T₂ (K) (blank to solve) (optional)

About this calculator

The combined gas law relates pressure, volume and absolute temperature of a fixed amount of gas: P₁V₁ ÷ T₁ = P₂V₂ ÷ T₂. Use kelvin for temperatures (K = °C + 273.15). Leave exactly one of the "state 2" fields blank and it is calculated.