Boyle's Law Calculator

Find a new gas volume after a pressure change.

Initial pressure (P₁) (atm)

Initial volume (V₁)

Final pressure (P₂) (atm)

Final volume (V₂) 2

Formula: P₁V₁ = P₂V₂ → V₂ = P₁V₁ ÷ P₂

Step-by-step with your numbers:

1. Values used:

2. Initial pressure (P₁) = 1 atm

3. Initial volume (V₁) = 4

4. Final pressure (P₂) = 2 atm

6. Initial pressure (P₁) x Initial volume (V₁) = 1 x 4 = 4

7. Final volume (V₂) = (Initial pressure (P₁) x Initial volume (V₁)) / Final pressure (P₂) = 4 / 2 = 2

Did we solve your problem today?

At constant temperature, pressure and volume are inversely related.

The math behind it

P₁V₁ = P₂V₂, so V₂ = P₁V₁ ÷ P₂.

1 atm × 4 L at 2 atm → 2 L.

Constant temperature?

Yes — Boyle's law assumes temperature and amount of gas stay fixed.