Combined Gas Law Calculator

Relate pressure, volume and temperature changes of a gas.

Initial pressure (kPa)

Initial volume

Initial temperature (K)

Final pressure (kPa)

Final temperature (K)

Final volume 1.6

Formula: P₁V₁/T₁ = P₂V₂/T₂

Step-by-step with your numbers:

1. Values used:

2. Initial pressure = 100 kPa

3. Initial volume = 2

4. Initial temperature = 300 K

5. Final pressure = 150 kPa

6. Final temperature = 360 K

8. Final volume = 1.6

Did we solve your problem today?

The combined gas law merges Boyle's, Charles's and Gay-Lussac's laws.

The math behind it

P₁V₁/T₁ = P₂V₂/T₂, with temperatures in kelvin.

100 kPa, 2 L, 300 K → 150 kPa, 360 K gives about 1.6 L.

When does it apply?

For a fixed amount of ideal gas as P, V and T all change.