Distance & Bearing Calculator
Calculate great circle distance and initial bearing between two points
Starting Point
Destination
Enter coordinates in decimal degrees. Use negative for S/W.
Example: Miami 25.7617, -80.1918 | Key West 24.5551, -81.7800
Quick Locations
Route Results
Distance
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Initial Bearing (True)
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Compass Direction
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Reciprocal Bearing
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Estimated Time Enroute
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Distance (Statute Miles)
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Distance (Kilometers)
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Waypoint Reference
Start Position
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End Position
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Midpoint (approx)
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About Great Circle Navigation
This calculator uses the Haversine formula to compute the great circle (shortest) distance between two points on Earth's surface. The initial bearing is the direction you would travel leaving the starting point.
Note: On long passages, the bearing will change as you travel along the great circle route. For short coastal voyages, a constant (rhumb line) bearing may be more practical.
Magnetic Variation: The bearing shown is TRUE north. Apply local magnetic variation to convert to magnetic compass heading.