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Density Altitude Calculator

Calculate density altitude from pressure altitude, temperature, and humidity — with full aircraft performance impacts, engine power loss, true airspeed, and ISA deviation.

For educational/planning use only — always use certified avionics for flight operations

Atmospheric Conditions

Enter field elevation or pressure altitude, OAT, and altimeter setting

Unit System

Field Elevation (ft MSL)

Airport / field elevation above MSL

Altimeter Setting

Standard = 29.92 inHg

Outside Air Temp (°F)

ISA standard at sea level = 59°F

Relative Humidity (%)

0–100% (optional; affects density)

Calibrated Airspeed (kts)

For TAS calculation

Aircraft Category

Scenario Presets

ISA Standard Atmosphere Reference

Temperature, pressure, and density vs altitude

Density Altitude

—

−2,000Sea lvl10,00018,000+

Pressure Altitude—

ISA Temp at PA—

ISA Deviation—

Air Density—

Density Ratio (σ)—

Performance Summary

True Airspeed—

Power available—

Takeoff roll—

Climb rate—

Risk Level

—

Density Altitude Calculator

Atmospheric Conditions

Density Altitude Results

Aircraft Performance Impact

Step-by-Step Calculation

ISA Standard Atmosphere Reference