Gas Density
ρ = p M / (R T)
How to Use This Calculator
Enter gas pressure (kPa), temperature (K), and molar mass (g/mol). For air, M ≈ 28.97 g/mol.
Formula
ρ = p M / (R T)
R is the universal gas constant. Assumes ideal gas behavior.
Frequently Asked Questions
When is this accurate?
At moderate pressures and temperatures. Real gases deviate near condensation or at high pressure.