| Flight Level |
Altitude MSL (ft) |
Drop Altitude (m AGL) |
How it works:
1. Pressure Altitude is corrected for local QNH (27ft per hPa deviation from 1013.25).
2. Ground elevation is subtracted from the resulting MSL altitude.
3. Result is converted to meters (1 ft = 0.3048 m).
Note: This tool uses a linear approximation (27ft/hPa). For precision, check your E6B or POH.