Elevation to Pressure Converter
Convert elevation pressure between units instantly. Includes conversion tables, common equivalents, and calculation formulas.
Formula
P = P0 x (1 - L*h/T0)^(g*M/(R*L))
The barometric formula models pressure decrease with altitude. P0 is sea-level pressure (101,325 Pa), L is the lapse rate (0.0065 K/m), h is altitude, T0 is temperature in Kelvin, g is gravity (9.80665 m/s2), M is molar mass of air (0.0289644 kg/mol), and R is the gas constant (8.31447 J/mol/K).
Worked Examples
Example 1: Denver, Colorado
Problem: Calculate atmospheric pressure at Denver (elevation 1,609 m) at 15 degrees C.
Solution: P = 101325 x (1 - 0.0065 x 1609 / 288.15)^5.2559\nP = 101325 x (1 - 0.03629)^5.2559\nP = 101325 x 0.8274\nP = 83,844 Pa = 838.44 hPa
Result: At 1,609 m: 83,844 Pa (0.828 atm, 24.76 inHg)
Example 2: Commercial Aircraft Cabin
Problem: Aircraft cabins are pressurized to about 6,000 feet (1,829 m). What is the cabin pressure?
Solution: Convert 6,000 ft = 1,828.8 m\nP = 101325 x (1 - 0.0065 x 1828.8 / 288.15)^5.2559\nP = 101325 x 0.8106\nP = 82,139 Pa
Result: At 6,000 ft: 82,139 Pa (0.811 atm, 11.91 psi)
Frequently Asked Questions
How does elevation affect atmospheric pressure?
Atmospheric pressure decreases with increasing elevation because there is less air above you to exert downward force. The relationship follows an exponential decay described by the barometric formula. At sea level, standard pressure is 101,325 Pa (1 atm). At 1,500 meters (about 5,000 feet), pressure drops to roughly 84,600 Pa. At the summit of Mount Everest (8,849 m), pressure is only about 33,700 Pa, roughly one-third of sea level pressure.
Can I use Elevation to Pressure Converter on a mobile device?
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Is Elevation to Pressure Converter free to use?
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How do I interpret the result?
Results are displayed with a label and unit to help you understand the output. Many calculators include a short explanation or classification below the result (for example, a BMI category or risk level). Refer to the worked examples section on this page for real-world context.
What formula does Elevation to Pressure Converter use?
The formula used is described in the Formula section on this page. It is based on widely accepted standards in the relevant field. If you need a specific reference or citation, the References section provides links to authoritative sources.
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