OhMyCalc

Combined Gas Law Calculator

Solve for any unknown in the combined gas law: P₁V₁/T₁ = P₂V₂/T₂.

How to Use the Combined Gas Law Calculator

  1. Enter initial pressure, volume, and temperature.
  2. Enter the two known final conditions.
  3. Enter 0 for the unknown variable and click Calculate.

Cas d'utilisation

Formule

Formula: P₁V₁/T₁ = P₂V₂/T₂. Enter 0 for the unknown variable to solve for it.

Questions fréquemment posées

What is the combined gas law?
The combined gas law merges Boyle's, Charles's, and Gay-Lussac's laws relating pressure, volume, and temperature of a fixed amount of ideal gas.
What temperature units should I use?
Enter temperatures in Celsius — the calculator converts to Kelvin internally. Absolute zero is −273.15°C.
How do I solve for one variable?
Enter 0 for the variable you want to solve for. For example, enter 0 for P₂ to find the new pressure.