AVIATION & AERONAUTIC CALCULATOR
Compass Heading
A precise tool.
What is the Compass Heading & How does it work?
The compass heading is the direction of travel relative to magnetic north, which can differ from true north due to magnetic variation and instrument errors known as deviation.
text{Compass Heading} = text{True Heading} + text{Variation} – text{Deviation}
var = meaning
Magnetic variation is the angle between true north and magnetic north, while deviation is the difference between the compass heading and the magnetic heading due to instrument errors.
Parameters
Result
—
Frequently Asked Questions
What is magnetic variation?
Magnetic variation is the angle between true north and magnetic north. It varies by location and changes over time.
How do I find my true heading?
True heading is your direction of travel relative to true north, which you can determine using aeronautical charts or GPS.
What causes deviation in compass headings?
Deviation is caused by instrument errors in the compass due to magnetic fields and other factors affecting its accuracy.
How do I correct for deviation in my compass?
Correct for deviation by calibrating your compass using known values or adjusting it based on deviation charts specific to your aircraft.
Is magnetic variation the same everywhere?
No, magnetic variation varies depending on your location and changes over time. Always check the latest variation data for your area.
Can I use this calculator for any type of aircraft?
Yes, this calculator can be used for various types of aircraft, but always ensure you have the correct magnetic variation and deviation values for your specific model.
What is the difference between true north and magnetic north?
True north is the direction towards the Earth’s geographic North Pole, while magnetic north is the direction towards the North Magnetic Pole, which is not aligned with the geographic pole.
Results are for informational purposes only and do not constitute professional advice.