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Background

Brief description of geomagnetism

About WMM

Main field model development, accuracy and limitations

Model & Software

Main field, model development, accuracy and test values

Maps

Browse imagery and contour maps for main field and secular change

Uses of WMM

Common applications of WMM

License

License and copyright information

Third Party Software

WMM program ports to other languages

Several users have ported the WMM C or Fortran programs to other languages and have kindly offered to share these programs. Neither the authors nor NGDC can provide any warranty or technical support for these programs. Only non-commercial "free-ware" will be linked to from this site. Linking to third party software does not imply an endorsement or review of any kind from the Federal Government. Users are encouraged to verify results based on the WMM test values. NOAA Disclaimer for external links.

  • Java (19 KB - Revised 20 June 2005) provided by John St. Ledger
  • Visual Studio C++ (467 KB - Revised January 2010) GeoMag 3.0, the Geographic Magnetic Calculator, is a tool to determine UTM Coordinates and the Magnetic Declination that correspond to a longitude/latitude location. Provided by Garry Petrie.
  • GeographicLib is a C++ library of geographic routines. The MagneticModel class reports the magnetic field for a given time and a position. The class currently supports WMM2010, EMM2010 and IGRF11. Provided by Charles Karney.
  • Visual Basic class version of GeoMag 7.0 (IGRF) for desktop applications. This class was written in Visual Studio 5.0. Provided by Fred Neudecker.

    • If you wish your software to be included on this page, please contact us.
Last Modified on: Tuesday, 15-Nov-2011 15:52:33 MST
NOAA > NESDIS > NGDC
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