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26 maj 2024 · Our calculator will help you find the magnetic declination for your specific location and date. A positive declination (+D) means that your compass will point east of north. A negative declination (-D) means that your compass will point west of north.
2 lip 2022 · World Magnetic Model 2020 Calculator. 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 2019.
MagDec is a graphical front end for the NCEI online Magnetic Field Calculators that eliminates the need to input geodetic coordinates and displays the calculated magnetic declination and secular variation in a placemark balloon.
The declination calculator provides declination values for any location on Earth and any given year between 1900 and 2020. Strongly magnetized rocks in the Earth's crust at some locations cause local anomalies in declination, which can lead to differences between the actual deviation of a compass needle and the calculated values.
18 wrz 2023 · Enter the declination at the start of the year, the annual change in declination, and the number of years since the start of the year into the calculator to determine the magnetic variation. This calculator can also evaluate any of the variables given the others are known.
GFZ Potsdam - IGRF declination calculator. City: (optional) Alternatively, input your own global coordinates. Date: (1900 - 2025) Altitude (optional): m. (-1000 - 600000)
Declination results are typically accurate to 30 minutes of arc, but environmental factors can cause magnetic field disturbances. The calculator provides an easy way for you to get results in HTML, XML, CSV, or JSON programmatically (API). Registration is required to access this service.
