Density Altitude Calculator

Your details

The published elevation of the airport or site above mean sea level.
ft
The local altimeter setting from the ATIS or METAR. Standard is 29.92 inHg / 1013.25 hPa.
inHg
The actual outside air temperature at field elevation.
°F
Humidity reduces air density slightly. Enable to account for dew point or relative humidity.
Dew point temperature. Must be at or below the OAT.
°F
Density AltitudeReduced performance
2,939ft

The altitude in the standard atmosphere with equivalent air density

Pressure Altitude1ft
Air Density1.0781kg/m³
Relative Density (sigma)0.8801
ISA Deviation-16.1°C
Absolute Pressure843hPa
2,939 ft
Normal<2000Reduced perf2000-5000Significant5000-8000High DA8000-12000Extreme DA12000+

Density altitude is 2939 ft - expect some performance reduction.

  • Air density is 88.0% of ISA sea-level standard, so a normally-aspirated engine produces roughly 12.0% less power than at sea level.
  • The outside air temperature is 16.1 °C below the ISA standard temperature at this pressure altitude.
  • Humidity adds 2938 ft to the density altitude compared to dry-air pressure altitude.
  • High density altitude increases takeoff roll distance, reduces climb rate, and can push piston engines and turboprops well below rated performance. Always check your aircraft Pilot Operating Handbook (POH) performance charts.

Next stepCross-check this result against your aircraft's POH performance charts before departure.

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