Coordinate distance calculator

What the result means

The result is a geodesic approximation along a spherical surface, not driving, walking, shipping, or flight-route distance. It ignores terrain, roads, restricted airspace, currents, and routing decisions.

Coordinate and precision checks

• Latitude must be between −90° and 90°; longitude between −180° and 180°.
• Use negative longitude for west and negative latitude for south.
• The spherical formula differs slightly from an ellipsoidal geodesic, especially when higher precision is required.
• Rounded or uncertain coordinates limit the meaningful precision of the distance.

Sources

• Movable Type Scripts: Calculate distance, bearing and more — formula implementation reference.
• EPSG Geodetic Parameter Dataset — coordinate-reference terminology.

The calculator runs locally in the browser and sends no coordinates to a server.