Real Gas Law Calculator

Calculate gas properties using the real gas equation: PV = ZnRT

Input Parameters

mol
dimensionless

Solve for:

Results

Enter values and click Calculate to see results

Real Gas Equation

PV = ZnRT

Where Z is the compressibility factor that accounts for deviations from ideal gas behavior.

Gas Constant (R) Values

  • 8.314 J/(mol·K)
  • 0.08314 L·bar/(mol·K)
  • 0.08206 L·atm/(mol·K)
  • 8.314 × 10⁻³ kPa·m³/(mol·K)

Compressibility Factor (Z)

  • Z = 1: Ideal gas behavior
  • Z < 1: Attractive forces dominate
  • Z > 1: Repulsive forces dominate
  • Varies with P, T, and gas type

Use Real Gas Law when:

High pressure (> 10 atm) • Low temperature • Strong intermolecular forces • High precision required