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. WMM2015 or IGRF2015 is preferred for 1/1/15 -12/31/19

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 7/7/15 to include WMM2015 and IGRF2015 models.