Calculate the great circle distance between two GPS coordinates using the Haversine formula. Supports latitude and longitude inputs with results in kilometers, miles, and nautical miles. Free online tool.
This free online calculator computes the great circle distance between two points on the Earth's surface using the Haversine formula. It assumes a spherical Earth with a radius of 6,371 km. Results include distance in multiple units and the initial bearing (azimuth) from the starting point to the destination.
Great circle distance is the shortest distance between two points on the surface of a sphere, measured along the surface. On Earth, this represents the shortest path an aircraft or ship would take.
The Haversine formula assumes a perfectly spherical Earth, which gives results accurate to about 0.5% of the actual distance. For most practical purposes like navigation and logistics, this is more than sufficient.
Use decimal degrees (e.g., 40.7128, -74.0060). For North and East, use positive values. For South and West, use negative values.
The initial bearing is the compass direction from the starting point to the destination, measured clockwise from North (0°). It tells you which direction to start traveling.