Water moisture content of humid air calculator

When analysing HVAC or other thermal applications, and the humidity of air needs to be modelled, some kind of multiphase flow calculation is chosen. In many cases the fraction of water in the air is required as input variable for the CFD algorithm. The calculator below calculates the different mass fractions of O2, N2 and H2O in air.

Humidity calculator

Calculate the fractions of O2, N2 and H2O in humid air for a given temperature and relative humidity.
Atmospheric pressure (1 atm = 101325 Pa) is assumed in the calculation.
The calculation is only valid for temperatures between 0 and 100 °C.