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ICAO standard atmosphere calculator

This page allows calculation of the ICAO standard atmosphere up to 65617 feet.
Fill in one number and click calculate to find the others!

Altitude (ft):

Temperature (deg C):

Temperature (deg F):

Pressure (hPa):

Pressure (inHg):

Density (kg/m^3):

If the above altitude is the indicated altitude then with QNH:
T at alt:

Actual Pressure:1013.25
Density alt: 0
True alt: 0