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Vapor Pressure Calculator

This calculator requires the use of Javascript enabled and capable browsers. This calculator is designed to give a set of values for calculated vapor pressure, either saturated or actual, based on data entered. It also determines the relative humidity if both temperature and dewpoint are entered. In our calculator, enter the temperature and/or the dewpoint; be sure to click on the proper designation if using measurements other than standard in the United States. Click on Calculate and if all data is entered, the calculated vapor pressure will be returned in both saturated and actual values, along with relative humidity; if only temperature is entered, saturated is returned. Only dewpoint entered returns actual.

Meteorology Calculator
Vapor Pressure Required Data Entry
Ambient Air TemperatureFahrenheit Celsius Kelvin
DewpointFahrenheit Celsius Kelvin

Calculated Results
Saturated Vapor Pressure Calculation

in of HG mm HG mb

lbs per square in hPA kPA
Actual Vapor Pressure Calculation

in of HG mm HG mb

lbs per square in hPA kPA
Relative Humidity Calculation = %
Version 1.5.9

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