basic

Van der Waals Real Gas Equation Calculator

(P + a/V²)(V − b) = nRT — real gas pressure from VdW.

Calculates pressure of a real gas using the van der Waals equation from volume, temperature, moles, and the gas-specific a and b constants.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
Was this helpful?

How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

P = nRT/(V−nb) − n²a/V²

In depth

Calculates pressure of a real gas using the van der Waals equation from volume, temperature, moles, and the gas-specific a and b constants.