Standard Atmosphere Calculator

The International Civil Aviation Organization (ICAO) published their "ICAO Standard Atmosphere" in 1993. It has the same model as the ISA (International Standard Atmosphere), but extends the altitude coverage to 80 kilometers (262,500 feet).

SI and US unit systems

-altitude
-velocity
-temperature
-pressure
-density
-speed of sound
-mach number
-dynamic viscosity
-mean free path
-reynolds number
-dynamic pressure
-total pressure (isentropic)
-total temperature (isentropic)