Distance Calculator Between GPS Coordinates

This tool uses the haversine formula to compute the great-circle distance — the shortest path between two points over the surface of the Earth, modelled as a sphere with the mean radius of 6,371 km. This is the same method used in aviation and marine navigation, and it is accurate to within about 0.5% everywhere on Earth.

It is the straight-line (as-the-crow-flies) distance. Driving distance depends on the road network and is always longer. Straight-line distance is what you need for flight planning, radio range, delivery radius checks, and 'how far apart are these two places really' questions.

A great circle is the shortest route between two points on a sphere. On a flat map projection this shortest route usually appears curved — which is why long-haul flights between, say, New York and Tokyo pass near Alaska. The blue line drawn on the map is the true great-circle path, not a straight line on the projection.

A kilometre is 1,000 metres. A statute mile — the one used on roads in the US and UK — is 1,609.344 metres. A nautical mile is 1,852 metres, defined as one minute of latitude, and is the standard unit in aviation and marine navigation. This tool shows all three at once.

The haversine formula on a spherical Earth is accurate to within about 0.5% of the true ellipsoidal distance — a few kilometres over a transatlantic route, metres over a city. For survey-grade geodesic distance on the WGS84 ellipsoid, dedicated tools using Vincenty or Karney algorithms are used, but for virtually all practical planning the difference does not matter.

Yes. Click “My location” to fill point A (or B) with your device's GPS position, then search or click the map to set the other point. Your location is processed entirely in your browser and never stored.