# Altitude Pressure

This calculator uses barometric formula to find out the pressure at the given altitude

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#### Timur

Created: 2011-08-23 20:46:18, Last updated: 2021-02-28 16:19:00

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The equation for the variation of barometric pressure with height, called barometric formula, has the form
$P=P_0e^{\frac{-\mu gh}{RT}}$,
where
$\mu$ - Molar mass of Earth's air, 0.0289644 kg/mol
$g$ - Gravitational acceleration, 9.80665 m/(s*s)
$h$ - Height difference, meters
$R$ - Universal gas constant for air, 8.31432 N·m /(mol·K)
$T$ - Air temperature, К

Default value for $P_0$ is 760 mmHg, i.e. standard barometric pressure, 101.325 kPa or 1 atmosphere. It also corresponds to 0 meters above sea level and can be left as is. Change the height (altitude above sea level) and temperature and get the results. Note that this is a theoretical value; in reality, atmosphere pressure depends not only on altitude and temperature but also on other factors such as humidity and weather conditions.

#### Altitude Pressure

Altitude Pressure (mmHg)

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