Ideal Gas Density Calculator

Find the density of an ideal gas from pressure, temperature and molar mass.

Density (kg/m³) 1.226

Formula: ρ = P·M ÷ (R·T)

Step-by-step with your numbers:

1. Values used:

2. Pressure = 101,325 Pa

3. Molar mass = 28.97 g/mol

4. Temperature = 288 K

6. Density = 1.226kg/m³

Did we solve your problem today?

An ideal gas's density follows directly from the ideal gas law.

The math behind it

ρ = P·M ÷ (R·T), where M is the molar mass in kg/mol.

Air (M 28.97) at 101325 Pa, 288 K → about 1.225 kg/m³.

Why does warm air rise?

Higher temperature lowers density, so warm air is buoyant.