Use Altitude From Pressure when you need to invert the barometric formula to estimate altitude from measured atmospheric pressure. Enter Pressure and Temperature using the definitions and units below so the result can be reproduced.

Pressure

A finite measured or assumed value, expressed in hPa.

Temperature

A finite measured or assumed value, expressed in K.

The published tool contract uses this rule: Invert the barometric formula to estimate altitude from measured atmospheric pressure.

Altitude

The calculated altitude in m.

The output is an estimate tied to the stated model and coefficients; it is not a direct measurement and should retain that label when reported.

Retain the original Pressure and Temperature values and their units alongside the result. Barometric Pressure is useful when you instead need to estimate atmospheric pressure at altitude from temperature using the barometric formula. Dewpoint From Vapor Pressure provides another view by helping you invert the Magnus formula to compute dewpoint temperature from water vapor pressure.

• Barometric Pressure

  Estimate atmospheric pressure at altitude from temperature using the barometric formula.

• Dewpoint From Vapor Pressure

  Invert the Magnus formula to compute dewpoint temperature from water vapor pressure.

• Clausius–Clapeyron Vapor Pressure

  Estimate vapor pressure at a second absolute temperature from a reference pressure and molar enthalpy of vaporization using the integrated Clausius–Clapeyron equation. Assumes vapor behaves ideally and enthalpy stays constant over the temperature interval.