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. WMM2010 or IGRF2010 is preferred for 1/1/10 -12/31/14

Usage notes

Home page

Great circle calculator

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

Updated 1/29/12 to include WMM2010 and IGRF2010 models.