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Density Altitude Calculator

Inverts the dry-air ISA troposphere model documented by NASA NDARC. Enter actual station pressure, not sea-level-reduced pressure or altimeter setting. Humidity is omitted; output restricted to −2000–11000 m geopotential height.

Inverts the dry-air ISA troposphere model documented by NASA NDARC. Enter actual station pressure, not sea-level-reduced pressure or altimeter setting. Humidity is omitted; output restricted to −2000–11000 m geopotential height.

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Result

Enter your values and run the tool to see your result.

How to use this tool

Check the units, enter your values, and run the tool. Results follow the assumptions and method below.

Calculation method

Dry-air density(pressure/((101325/(1.225*288.15))*temperature))
Density altitude as geopotential height(288.15/0.0065*(1-((pressure/((101325/(1.225*288.15))*temperature))/1.225)^(1/(9.80665/((101325/(1.225*288.15))*0.0065)-1))))
Density altitude in feet(288.15/0.0065*(1-((pressure/((101325/(1.225*288.15))*temperature))/1.225)^(1/(9.80665/((101325/(1.225*288.15))*0.0065)-1))))/0.3048

References