Magnetic declination calculator
An updated IGRF model is expected at the end of 2014 and it will be incorporated when it becomes available. The IGRF-2010 model is intended for use up to the end of 2014. Values computed with the IGRF-2010 for 2015 may be of reduced accuracy. Note that there will be slight differences between the current IGRF-2010 and expected IGRF-2015 results especially for the time period of 2009 to 2015.
This calculator may be used to calculate the magnetic declination for a specified location and date based on the International Geomagnetic Reference Field model.
Learn how to use the magnetic declination with a compass.
Other components of the magnetic field may be calculated using the magnetic field calculator.