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Airplanes and Aircraft
Meteorology and Weather

How do you calculate pressure altitude?


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Wiki User
September 12, 2011 11:45PM

Pressure altitude can be determined by dialing your kollsman window to 29.92" or 1013mb the altitude displayed will be pressure altitude. Or if you want to use a mathematical equation to calculate pressure it is: 29.92-current baro.=x then take x*1000+Current field elevation=pressure altitude.

Example: Current baro is 30.08 field elevation is 845'.

29.92-30.08= -.16 now take -.16*1000+845=685 is your pressure altitude.