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Molar mass calculator

Molar mass calculator allows you to calculate molar mass of different gases, or set parameters of gas like volume, weight, temperature and pressure to calculate its molar mass.

Select gas from the list or enter parameters

Calculate the molar mass of air
Molar mass is a physical property defined as the mass of a given substance divided by its amount of substance, so it is a weight of one mole of substance. Molar mass is defined from the ideal gas law (Equation Mendeleev-Clapeyron):
where - gas pressure, - molar volume, - mass of gas, - molar mass, - universal gas constant, - absolute temperature