How This Tool Works
This calculator finds the geographic midpoint between two latitude and longitude coordinates along the great-circle path. It converts both input points from degrees to radians, treats them as points on the Earth's surface, and calculates the halfway point on the curved route rather than averaging the displayed coordinates.
Enter Point A and Point B as decimal degrees. Valid latitude values run from -90 to 90, and valid longitude values run from -180 to 180. The result shows the midpoint coordinates plus the distance from each endpoint, so you can confirm the midpoint is equidistant along the route.
- Input: Two latitude/longitude coordinate pairs.
- Method: Great-circle midpoint on a spherical Earth model.
- Output: Decimal-degree midpoint and distances in kilometers.