Pressure Altitude Calculator
Inputs
ft MSL
Sea level to ~14,000 ft for US airports
inHg
Typical: 29.82–30.12 inHg
Tab to move between fields
Results
Pressure Altitude
5,000 ft
≈ 5 Eiffel Towers
Pressure Correction0 ft
ISA Temperature at PA105.8°F
Atmospheric Pressure24.89 inHg
Atmospheric Pressure843 hPa
1
Pressure Correction
Correction = (29.92 − Altimeter Setting) × 1000
= (29.92 − 29.92) × 1000
= 0 ft
Altimeter is at standard — pressure altitude equals field elevation.
2
Pressure Altitude
PA = Field Elevation + Correction
= 5,000 + 0
= 5,000 ft
Pressure altitude is the altitude in the standard atmosphere where the pressure is the same as your actual location. Used for performance charts and flight level assignments.
3
ISA Temperature at PA
ISA Temp = 15°C − 2°C × (PA ÷ 1000)
= 15 − 2 × (5,000 ÷ 1000)
= 5.0°C (41.0°F)
The expected standard temperature at this pressure altitude per the ISA model.