MAGNETIC FIELD CALCULATORS

Research Calculators

Geomagnetic Model Calculator


Online calculators to World Magnetic Model (WMM2025) and World Magnetic Model High Resolution (WMMHR2025). Note that these are backup calculators to the operational calculators hosted by NOAA
green light

Real Time Disturbance Field Calculator


This calculator evaluates the disturbance field of the POMME Model in real-time.
red light

WORLD MAGNETIC MODEL 2015 VERSION 2 GOOGLE SPREADSHEET APPLICATION


Google spreadsheet calculator based on the World Magnetic Model

IONOSPHERIC MAGNETIC FIELD CALCULATOR


This calculator evaluates daily magnetic field variations at mid and low-latitudes from the climatological DIFI-7 model
green light

Real-time model of the Ionospheric Electric Fields


Real-time prediction of the equatorial ionospheric eastward electric field (EEF).
green light

Real-time prediction of Disturbance storm-time indices (Dst)


Solar-wind forecasting of Dst indices using machine-learning modeling.
green light

Operational Calculators

These calculators are hosted at NOAA's National Centers for Environmental Information (NCEI).

Declination

noaa logo
Online magnetic declination calculator based on the International Geomagnetic Reference Field and the World Magnetic Model.

Field Value Calculator

noaa logo
Online magnetic field value calculator based on the International Geomagnetic Reference Field Model and the World Magnetic Model.

Grid Magnetic Field Calculator

noaa logo
Online magnetic field value grid calculator based on the International Geomagnetic Reference Field Model and the World Magnetic Model.

US Historic Calculator

noaa logo
Online historical (1750-2010) magnetic declination calculator based on the IGRF and USD polynomial models.