Description
The declination calculator provides declination values for any location on Earth and any given year between 1900 and 2020. Strongly magnetized rocks in the Earth's crust at some locations cause local anomalies in declination, which can lead to differences between the actual deviation of a compass needle and the calculated values. Apart from the declination angle in degrees (°) and minutes (') the declination calculator also provides field intensity, inclination and other commonly used geomagnetic field components. The angle of inclination also is provided in degrees (°) and minutes ('), all other components are given in nanoTesla (nT). The calculation is based on the International GeoMagnetic Reference Field (IGRF) which describes the geomagnetic core field.
