Calculation of atmosphere-properties

Note: this form uses JavaScript to compute properties related to the 1976 standard atmosphere up to 70'000 meter. The calculation requires a Browser with Javascript enabled. A standalone version written in JAVA for use up to 1000km is available here.


Altitude (<70'000 m !) m
Speed m/sec
Reference Length m


Temperature ° K
Density kg/m3
Pressure N/m2
Speed of Sound m/sec
dyn. Viscosity N sec/m2
Mach Number
Dynamic Pressure N/m2
Reynolds Number
Laminar Cf
Turbulent Cf

Bruno Berger, Swiss Propulsion Laboratory 30. June 99.