This is the 'crow-fly' distance. The actual travel distance by road or sea will likely be significantly longer.
Overview
Distance calculation between latitude/longitude coordinates uses Haversine formula. Accounts for Earth's curvature. Essential for navigation, mapping, and location-based services.
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Pro Tips
Use decimal degrees (not DMS) for calculations.
Earth radius: 6,371 km (3,959 miles).
1° latitude ≈ 111 km (69 miles).
1° longitude varies by latitude (smaller near poles).
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Fun Facts
"Haversine formula assumes spherical Earth."
"More accurate: Vincenty formula (ellipsoid)."
"GPS accuracy: 3-5 meters typical."
"Great circle = shortest path between two points."
