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

Air pressure above sea level can be calculated as. p = 101325 (1 - 2.25577 10-5 h) 5.25588 (1) where . 101325 = normal temperature and pressure at sea level (Pa) p = air pressure (Pa) h = altitude above sea level (m) Example - Air pressure at Elevation 10000 m. The air pressure at altitude 10000 m can be calculated as

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

Atmospheric Pressure at Different Altitudes Altitude Above Sea Level Temperature Barometric Pressure Atmospheric Pressure Feet Miles Meters F C In. Hg. Abs. mm Hg. Abs. PSIA Kg / sq. cm kPa A 0 0 59 15 29.92 760.0 14.696 1.0333 101.33 500 153 57 14 29.38 746.3 14.43 1.015 99.49

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

Due to the fact that weather conditions affect pressure and altitude calculations, the pressure and temperature at sea level must be known. The altitude at a given air pressure can be calculated using Equation 1 for an altitude up to 11 km (36,090 feet).

www.ittaerospace.com/.../TechnicalData/**Altitude**_Temp_and_**Pressure**_Conversion.pdf?ext=.pdf

Altitude Pressure Chart Aerospace Controls-2000-1000 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000

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

The height relative to sea level conversions are derived using the US Standard Atmosphere 1976 barometric formula for geopotential altitude with the following values[1-6] at heights from 5,000 ft (1524 m) below to 100,000 ft (30,480 m) above mean sea level. Standard atmospheric pressure of 1013.25 mb at 0 m, 226.321 mb at 11,000 m, 54.7489 mb at 20,000 m above mean sea level.

www.higherpeak.com/**altitudechart**.html

Altitude-Oxygen Chart Use the tables below to see how the effective amount of oxygen in the air varies at different altitudes. Although air contains 20.9% oxygen at all altitudes, lower air pressure at high altitude makes it feel like there is a lower percentage of oxygen.

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

Pressure at altitude. Estimates air pressure at a given height. Physical Sciences index Other physics calcs index: The ambient air pressure at altitide is rougly estimated by assuming an exponential drop with altitiue and a sea-level pressure of 1 atm. In some circumsrtances this method can give large errors, so should not be relied on.

**www.engineeringtoolbox.com**/**standard-atmosphere**-d_604.html

A "Standard Atmosphere" can be regarded as an average pressure, temperature and air density for various altitudes. The "U.S. Standard Atmosphere 1976" is an atmospheric model of how the pressure, temperature, density, and viscosity of the Earth's atmosphere changes with altitude.It is defined as having a temperature of 288.15 K at the sea level 0 km geo-potential height and...

www.**altitude**.org/air_**pressure**.php

Altitude air pressure calculator Click on the menu on the left to see the range of altitude.org interactive calculators At sea level there is a pressure equivalent to 10 metres of water pressing down on all of us all the time.

hypoxico.com/**altitude**-to-oxygen-**chart**

Below is an altitude oxygen chart that extrapolates oxygen percentages to real altitude, which you can use in conjunction with Hypoxico systems. This chart will help you find oxygen levels at altitudes you are interested in, starting with the oxygen content of the air at sea level.