ALTITUDE
Altitude Calculator
Pressure altitude · Density altitude · ISA deviation · Temperature correction
ISA standard
density-aware
Atmospheric parameters
ft
°C
Actual outside temperature
hPa
1013.25 hPa = standard
ft
For density altitude at airfield
Altitude formulas
- PA = IA + 145442.2 × (1 - (QNH/1013.25)^0.1903) pressure altitude
- DA = PA + 120 × (OAT - ISA_ALT) density altitude
- ISA_ALT = 15 - (PA × 1.98/1000) ISA temp at altitude
Pressure altitude
8,500
ft
Density altitude
8,940
ft
ISA temperature
-1.8
°C
Temperature deviation
ISA -7°C
ISA +0°C
Altitude factors
ISA deviation
-7.0
°C
QNH deviation
0.00
hPa
Density ratio (ρ/ρ₀)
0.902
Field density altitude
0
ft
Altitude comparison
indicated vs density
Indicated
8,500 ft
Pressure
8,500 ft
Density
8,940 ft