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Calculate Temperature, Dewpoint, or Relative Humidity

1) Choose a temperature scale.
2) Enter values in 2 of the 3 boxes.
3) Press "Calculate" to find the missing value.

Fahrenheit      Celsius

Temperature T (°)     

Dewpoint Td (°)     

Relative Humidity RH (%)     


* Values are calculated using the August-Roche-Magnus approximation.
* Equations for each unknown written in terms of the two knowns

Created and maintained by Brian McNoldy

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