Division of Physiology School of Medicine University of California, San Diego

Procedures for Calculating Barometric Pressure from Altitude, and vice versa, for both the Standard Atmosphere and the more applicable Model Atmosphere Equation (J. Appl. Physiol. 81:1850-1854, 1996)

Download the Excel file PB-Alt.xls, then open it with the Microsoft Excel® program, and follow the instructions at the top of the worksheet.

Procedures for Calculating the Relationships Between True Altitude, Room Oxygen Concentration, and Equivalent Altitude

There are two procedures:

1. One calculates the equivalent altitude for various degrees of oxygen enrichment, knowing the true altitude.
2. The other calculates the degree of oxygen enrichment necessary to provide a certain equivalent altitude, knowing the true altitude.

Download the Excel file EquivAlt-FIO2.xls, then open it with the Microsoft Excel® program, and follow the instructions at the top of the worksheet.

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Updated December 14, 2004 by UCSD Division of Physiology.
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