Air Pressure at Altitude

Calculate atmospheric pressure based on your height above sea level.

Elevation Data

Altitude (h)

Pressure at Sea Level (P0) (hPa)

Calculation Results

About this calculator

Overview

Atmospheric pressure decreases as altitude increases because there is less air above you pushing down. This is modeled by the barometric formula.

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Pro Tips

Fun Facts

"Water boils at a lower temperature at high altitudes because the lower air pressure makes it easier for molecules to escape into gas."
"Ears 'pop' during rapid altitude changes because the pressure inside your ear needs to equalize with the outside atmosphere."
"Commercial aircraft cabins are pressurized to simulate an altitude of about 6,000–8,000 feet."

Formula: P = P0 * (1 - L*h/T0)^(gM/RL)