- Altitude Calculators -
Enter air temperature (OAT) (°C or °F), QNH (hPa or inHg) and elevation (feet) in the grey fields.
The fields are pre-filled when you have requested a METAR previously.
For the latest weather, visit our METAR/TAF tool:
This calculates the actual altitude you are at when you know QNH and Pressure Altitude.
Helpful when you are unsure of the accuracy of your altitude indicator.
See the image below for a graphical relationship of pressure & density altitude vs temperature.