Interactive Magnetic Declination Calculator: Click Any Location to …
Oct 21, 2025 · Click a location, note the declination, then check the same location in 10 years—it will likely differ by several degrees. The tool shows current values based on the latest magnetic field …
Magnetic Declination (Variation) | NCEI
Magnetic declination (variation) calculator based on the IGRF magnetic field model. Estimates magnetic delination world-wide from 1900 - present.
Magnetic Declination Calculator | By Zip Code or City
Calculate the exact magnetic declination by zip code, city, or GPS coordinates. Understand true north vs magnetic north for accurate navigation.
Magnetic Declination and Grid Variance - MapTools
This page allows you to look up current values for Magnetic Declination and Grid Variance for any location. Then you can see what changes as you select various combinations of north references to …
Find the magnetic declination at your location: USA
Find the magnetic declination in USA 214 North Temple Condominium A and B Trailer Court Number O A and B Trailer Court Number T A and F Trailer Court A and F Trailer Park A Country Place A …
Magnetic Declination Calculator - Compute the Angle Between True …
Input latitude, longitude, and date to get the exact angle between true north and magnetic north (in degrees and minutes) using the latest International Geomagnetic Reference Field (IGRF) or World …
Historical Magnetic Declination Viewer
Jun 4, 2024 · As the earth's magnetic field varies over time, the positions of the north and south magnetic poles gradually change. The magnetic declination at a given location also changes over …
CrowdMag | Geomag
1 day ago · Install the CrowdMag app, and use it to measure magnetic data along your path during walks, runs, or other outdoor activities. Data ("Magtivities") can be used to create a map of the …
Magnetic Declination Calculator - Online Compass
Free browser-based magnetic declination calculator. Compute the 2026 angle between True North and Magnetic North for any latitude and longitude using the World Magnetic Model (WMM-2025). Works …
World Magnetic Model Calculator - British Geological Survey
Use the tool below to compute values for the geomagnetic field and secular variation for a given set of coordinates and date. This calculator uses the World Magnetic Model as released in Dec 2024.