Density Altitude Calculator
Find density altitude from pressure altitude and temperature.
Density altitude is the altitude the air 'feels like' to an aircraft — key for performance.
The math behind it
DA ≈ PA + 118.8·(OAT − ISA), where ISA temperature ≈ 15 − 1.98·(PA/1000) °C.
Worked example
5000 ft pressure altitude at 25 °C → about 7375 ft density altitude.
FAQ
Why does hot weather hurt takeoff?
Higher density altitude means thinner air, reducing lift and engine power.