Atmospheric Parameters
Enter elevation, QNH, and actual temperature to calculate ISA values
ft
hPa
°C
ISA Temperature
11.0
°C
Pressure Altitude
2000
ft
Density Altitude
2470
ft
Note: This calculator uses the ISA standard atmosphere model. QNH format is auto-detected (values between 25-35 are treated as inHg, otherwise as hPa). Density altitude is critical for aircraft performance assessment.