Geomagnetic Field Calculator.

Latitude in dd.ddd dd:mm.mmm or dd:mm:ss.sss format

Longitude in dd.ddd dd:mm.mmm or dd:mm:ss.sss format

Height in km above the spheroid

Date in mm/dd/yy format

Magnetic field model. WMM2005 or IGRF2005 is preferred for 1/1/05 -12/31/09

Usage notes

Home page

Great circle calculator

Stand-alone magnetic field software. (Includes fields in geocentric coordinates) Mac , DOS and Linux versions.

Updated 1/2/06 to include WMM2005 and IGRF2005 models.