Latitude Longitude Distance Converter

GPS coordinate distance is the shortest distance between two points on the Earth's surface, measured along the great circle connecting them. A great circle is the largest possible circle that can be drawn on a sphere — imagine stretching a rubber band tightly between two points on a globe. The great-circle distance is always the shortest path between two locations on a spherical surface, which is why long-distance airline routes appear curved on flat maps.

This calculator uses the Haversine formula, which is the standard mathematical method for computing great-circle distances from latitude and longitude coordinates. The formula accounts for the Earth's curvature by treating it as a sphere with a radius of approximately 6,371 kilometers (3,959 miles). While the Earth is actually an oblate spheroid slightly wider at the equator, the spherical approximation produces results accurate to within 0.3% for most practical purposes.

The calculator accepts coordinates in decimal degrees — the standard format used by GPS devices, Google Maps, and most mapping software. It outputs distances in kilometers, miles, nautical miles, meters, and feet, along with the initial bearing (azimuth) from the first point to the second and an estimated flight time. Whether you are planning a trip, calculating shipping routes, or simply curious about distances between cities, this tool provides accurate results.

The Haversine formula calculates the great-circle distance between two points on a sphere given their latitudes and longitudes. It is numerically well-conditioned for small distances, making it the preferred choice for most distance calculations.

Latitude and longitude form a coordinate grid that uniquely identifies any point on Earth's surface. Understanding these coordinates is essential for accurate distance calculations.

The Equator is at 0° latitude, and the Prime Meridian (through Greenwich, England) is at 0° longitude. These two lines divide Earth into four quadrants and provide the reference points for all coordinate measurements.

The latitude-longitude distance calculator provides comprehensive distance and direction information:

1. Enter Point 1 coordinates: Input the latitude (-90 to 90) and longitude (-180 to 180) of your starting point in decimal degrees.
2. Enter Point 2 coordinates: Input the latitude and longitude of your destination point.
3. View the distance: The result shows the great-circle distance in kilometers, miles, nautical miles, meters, and feet.
4. Check the bearing: The initial bearing (azimuth) shows the direction from Point 1 to Point 2 in degrees and cardinal direction.
5. See flight time: An estimated flight time is provided assuming an average commercial jet speed of 800 km/h.
6. Use preset locations: Click any preset city button to quickly load its coordinates and calculate distances.

GPS distance calculation is essential in aviation and maritime navigation. Pilots and ship captains plan routes along great-circle distances because these represent the shortest paths between locations on Earth. A flight from New York to London follows a great-circle route that curves northward over Newfoundland — appearing curved on a flat map but representing the shortest possible path on the globe.

In logistics and supply chain management, calculating distances between distribution centers, warehouses, and delivery points helps optimize routes and estimate shipping costs. Many logistics software systems use GPS coordinates and Haversine calculations to determine the most efficient delivery routes across multiple stops.

Outdoor recreation and fitness tracking also benefit from GPS distance calculations. Hikers, runners, cyclists, and sailors use GPS coordinates to measure distances between waypoints, track progress along routes, and plan adventures. Fitness apps use similar calculations to convert GPS traces into distance measurements for training logs.