Air Density Calculator

Find air density from pressure and temperature.

Air density (kg/m³) 1.225

Formula: ρ = P ÷ (R · T), R = 287.05

Step-by-step with your numbers:

1. Values used:

2. Pressure = 101,325 Pa

3. Temperature = 15 °C

5. Air density = 1.225kg/m³

Did we solve your problem today?

Dry air density depends on pressure and temperature (ideal gas law).

The math behind it

ρ = pressure ÷ (specific gas constant 287.05 × temperature in kelvin).

101,325 Pa, 15 °C → 1.225 kg/m³.

Altitude?

Lower pressure aloft means thinner (less dense) air.