AV-G30
Magnetic Declination
Calculate magnetic declination, inclination and field strength for any location and date with the World Magnetic Model, and convert compass bearings to true.
● Runs on your device; nothing is uploadedHow to use it
- Enter latitude, longitude and altitude, and choose the Unit
- Set the Date (UTC)
- Read the declination, inclination and field components
- Enter a Compass (magnetic) bearing to get the true bearing
Limits
- Altitude
- -1 km to 850 km
- Date
- Dec 2014 – Nov 2029, extrapolated up to 2 years beyond
- Latitude
- -90° to 90°
- Longitude
- -180° to 180°
Features
- World Magnetic Model WMM-2015, WMM-2020 and WMM-2025
- North, east, down, horizontal and total intensity in nT
- Altitude in metres, kilometres or feet
- Warns when a date is extrapolated outside the model windows
- Magnetic to true bearing conversion
For AI agents: avtools_magnetic_declination
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