en.wikipedia.org/wiki/Atmospheric_pressure

Atmospheric pressure, sometimes also called barometric pressure, is the
pressure exerted by the weight of air in the ...

www.mide.com/pages/air-pressure-at-altitude-calculator

Altitude is calculated from air pressure and vice versa. A detailed table and plot
along with descriptions of the equations are included.

www.engineeringtoolbox.com/air-altitude-pressure-d_462.html

Elevation above sea level - in feet and meter - with barometric and atmospheric
pressure - inches mercury, psia, kg/cm 2 and kPa.

www.altitude.org/air_pressure.php

Altitude air pressure calculator. Altitude.org is charity-funded and written by
independent doctors.

www.avs.org/AVS/files/c7/c7edaedb-95b2-438f-adfb-36de54f87b9e.pdf

AtmPres at Diff Altitudes.doc. Atmospheric Pressure at Different Altitudes. Altitude
Above Sea Level Temperature. Barometric Pressure. Atmospheric Pressure.

hyperphysics.phy-astr.gsu.edu/hbase/Kinetic/barfor.html

If the atmospheric pressure at ground level is. P0 = ... then the pressure at an
altitude of ... Derivation of formula, Pressure at selected heights, Constituents of
air ...

keisan.casio.com/exec/system/1224579725

Calculates the atmospheric pressure at the present location from the altitude and
temperature, and sea-level pressure.

www.sensorsone.com/altitude-pressure-units-conversion/

Convert an altitude in feet or metres of height above sea level to a pressure ...
Standard atmospheric pressure of 1013.25 mb at 0 m, 226.321 mb at 11,000 m, ...

www.calctool.org/CALC/phys/default/pres_at_alt

Other physics calcs online calculation: Pressure at altitude - Estimates air
pressure at a given height.

www.reference.com/science/happens-air-pressure-altitude-increases-3bee9b0d705ee941

As altitude increases, the air pressure decreases. The surface of the earth is the
bottom of an ocean of air. The layers on top increase pressure so that at sea ...