Bearing Between Coordinates Calculator
Gives the direction to set off in from one point to reach another, and the direction you are heading when you arrive.
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The formula
θ = atan2(sin Δλ × cos φ₂, cos φ₁ × sin φ₂ − sin φ₁ × cos φ₂ × cos Δλ)
The result runs clockwise from north. The Earth is treated as a sphere.
What to watch out for
The rhumb line holds one compass heading all the way, which is simpler to steer but longer than the great circle.
Frequently Asked Questions
What bearing is New York from London?
The great circle sets off at 288.3°, north of west, and arrives at 231.2°. The constant-compass bearing is 258.0°.
What is the difference between initial and final bearing?
A great circle crosses each meridian at a different angle, so your heading drifts along the route unless you follow the equator or a meridian.
Does it work across the 180° meridian?
Yes. From 179° E to 179° W on the equator the bearing is 90.0°, due east, because the shorter way is used.