Distance Between Cities – Calculate City-to-City Distance
Use this tool to calculate the straight-line (as the crow flies) distance between any two large cities (> 500k inhabitants) in the world.
How we calculate the distance between two cities
The distance between two cities is calculated using the Haversine formula, which determines the great-circle distance between two points on a sphere given their latitude and longitude coordinates. This formula accounts for the Earth's curvature to provide an accurate "as the crow flies" distance. The Earth's radius used in our calculations is 6,371 kilometers (3,959 miles). The result represents the shortest path between two cities over the Earth's surface, not the driving or walking distance.