HUMCAL.COM

(Water) vapor pressure is the pressure exerted by a (water) vapor that is in equilibrium with its non-vapor phases. When the water vapor is in a mixture with a carrier gas (select it from the drop-down list in parameters settings), its vapor pressure can also be regarded as a partial pressure, having its stable maximum value at an equilibrium vapor pressure. The equilibrium vapor pressure (also referred to as a saturation vapor pressure), increases exponentially with the gas temperature according to relation, originally described by Clausius-Clapeyron equation. The humidity calculator / moisture calculator uses more accurate equations, which can be selected from the drop-down list in parameters settings... Dew point is the temperature at which dew, or condensation, forms, on cooling a gas. It is also the temperature, at which water vapor is in equilibrium with liquid water. The humidity calculator calculates the dew point from the inverse water vapor pressure formulae, selected by..