GEOGRAPHY & CARTOGRAPHY CALCULATOR
Conversiontrue Bearing
A precise tool.
What is the Conversiontrue Bearing & How does it work?
A magnetic bearing is the direction to an object measured relative to magnetic north, which is the direction a compass needle points.
Magnetic declination (also called variation) is the angular difference between magnetic north and true north at a given location. Declination is expressed in degrees east (+) or west (‑) of true north.
To convert a magnetic bearing to a true bearing, add the declination to the magnetic bearing and normalize the result to the range 0°–360°.
\theta_{T} = \theta_{M} + \delta \pmod{360}
\theta_T = true bearing, \theta_M = magnetic bearing, \delta = magnetic declination
Parameters
Result
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Frequently Asked Questions
What is magnetic bearing?
A magnetic bearing is the direction to an object measured relative to magnetic north, which is where a compass needle points.
How do I convert magnetic bearing to true bearing?
Add the magnetic declination to the magnetic bearing and normalize the result to the range 0°–360°.
What is magnetic declination?
Magnetic declination, or variation, is the angular difference between magnetic north and true north at a given location.
How do I find magnetic declination for my area?
You can find magnetic declination by checking online resources such as the National Oceanic and Atmospheric Administration (NOAA) or using a GPS device with declination correction.
Why is it important to convert from magnetic to true bearing?
Converting from magnetic to true bearing is crucial for accurate navigation, especially in areas where there is a significant difference between magnetic and true north.
Results are for informational purposes only and do not constitute professional advice.