Vapor Pressure Formula & Calculator

Formula
`e = 6.11*10^((7.5*TD)/(237.3 + TD)) `
`es = 6.11*10^((7.5*T)/(237.3 + T)) `
`RH = e/(es) * 100`

where
e → Actual Vapor Pressure
es → Saturated Vapor Pressure
TD → Dewpoint
T → Air Temperature
RH → Relative Humidity

Vapor Pressure Calculator

Online vapor pressure of air calculator to find the actual & saturated vapor pressure and relative humidity of air. To find the pressure of gaseous form of liquid, users can utilize the above formula for paperwork calculation, whereas for quick calculation, users can use this vapor pressure calculator with the known input values of temperature and dew point of air.