FullCalculator

Altitude Pressure Calculator

Altitude Pressure

Calculate atmospheric pressure at a given altitude using the barometric formula

meters
hPa
C

Formula

P = P0 x ((T0 - L x h) / T0)^(gM / RL) where L = 0.0065 K/m

Frequently Asked Questions

How does pressure change with altitude?
Atmospheric pressure decreases roughly exponentially with altitude. At about 5,500 meters (18,000 ft), pressure is approximately half of sea level pressure.
At what altitude is breathing difficult?
Most people begin to feel altitude effects above 2,400 meters (8,000 ft). Above 8,000 meters (26,000 ft) is the death zone where supplemental oxygen is required.

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