Psychrometric Calculator

Calculate all psychrometric properties from dry bulb temperature and relative humidity.

Wet Bulb Temperature
--
°F
Dew Point
--
°F
Humidity Ratio
--
gr/lb (grains per lb)
Enthalpy
--
BTU/lb dry air
Specific Volume
--
ft3/lb dry air
Vapor Pressure
--
psi
Air Density
--
lb/ft3

Psychrometric Properties Explained

  • Dry Bulb Temperature: The air temperature measured by a standard thermometer
  • Wet Bulb Temperature: Temperature measured with an evaporating-water-covered thermometer; indicates the adiabatic saturation temperature
  • Dew Point: Temperature at which moisture begins to condense
  • Humidity Ratio: Mass of water vapor per mass of dry air
  • Enthalpy: Total energy content of the air-water mixture
  • Specific Volume: Volume per unit mass of dry air

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