This is a calculator for the values of the USStandard Atmosphere (1976), that may be displayed
in different units. (U.S. Standard Atmosphere, 1976, U.S. Government Printing Office,
Washington, D.C., 1976)
Usage:
In the three columns, the table shows the values of the standard atmosphere at three altitudes.
Type a value for the geometric altitude, the geopotential altitude, the pressure or the
density into an input field (light green). After a mouse click on any free space of the window
or on the "calculate" button, the calculation is performed. The input value must be
within the range of valid values. The Standard Atmosphere is defined between 0 km and 84.852 km
geopotential altitude.
The quantities with pink fields are just output values. These may not be typed for input.
Move the mouse over the term of a quantity or click on it to read its full name.
In the last column of the table you may choose the unit for the input and output values in the
whole row. After a change, values calculated before are displayed in the new unit.
Example: What is the pressure at a geometric altitude of 4811 m under the conditions of
the standard atmosphere. Type the value "4811" into a field in the first row
(geometric altitude). As unit you should have chosen "m" before.
After a mouse click on any free space of the window or on the "calculate" button,
you may read the result (545 hPa).
Remarks:
 Large and small numbers are written exponentially. As example
2.3e5 = 2.3⋅10^{5} = 230000 or
4.5e5 = 4.5⋅10^{5} = 0.000045.
 There is no warranty for the conversion. Cactus2000 is not
responsible for damage of any kind caused by wrong results.
 Please send an email if you have suggestions or if you would like to see more
conversions to be included.
© Bernd Krüger, 21.03.2008
