Saturated Vapour Pressure Calculator
The calculator on this page provides a means of calculating:-
- The saturated vapour pressure (hPa) of ambient air at a known temperature.
- The dew point temperature (
, 
) of the air at this %RH. - The enthalpy of the air at this %RH.
- The mixing ratio and the absolute humidity of the air.
It can be seen from the calculator above that as the %RH increases the dew point temperature moves closer to the ambient temperature. At 100%RH the dew point temperature is the same as the ambient temperature. Note, the other properties also increase in relation to the %RH. In ambient conditions the water is in the vapour phase.
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Compressed air property calculators