Altitude Pressure Calculator
Calculate atmospheric pressure at altitude
ft
inHg
Formula
P = P₀ × (1 - 2.256×10⁻⁵h)^5.256
Barometric formula for standard atmosphere pressure at altitude.
Examples
5000 ft
~24.9 inHg, 17.4% effective O₂.
Frequently Asked Questions
About Altitude Pressure
Calculate atmospheric pressure at different altitudes.
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