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⚗️ Gas Density Calculator

Calculate gas density using the ideal gas law and molecular weight

Gas Density Calculator

Common Gas Lookup

Gas Density Reference

Gas Density Formula:

d = PM/RT

d = density, P = pressure, M = molar mass, R = gas constant, T = temperature

Unit Conversions:

Pressure:

1 atm = 101,325 Pa

1 atm = 760 mmHg

1 atm = 14.7 psi

Temperature:

K = °C + 273.15

K = (°F + 459.67) × 5/9

Typical Gas Densities (STP):

H₂
0.090 g/L
Air
1.29 g/L
CO₂
1.96 g/L