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 (^{\circ}C, ^{\circ}F) 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

An introduction to Dry Tank Technology

DDT, a comparison