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Compute lat/lon given radial and distance from a known point. Enter lat/lon of initial point, true course and distance. Select distance units and earth model and click "compute". Lat/lons may be entered in DD.DD, DD:MM.MM or DD:MM:SS.SS formats. Note that the starting point cannot be a pole.
- Ed Williams' Aviation Page
Ed Williams' Aviation page. My 182 . My aviation formulary...
- Ed Williams' Aviation Page
Use Great Circle Mapper to calculate the distance and flight duration between all airports worldwide and draw the flight route on a map.
Distance Units: Earth model: Javascript Great Circle Calculator using ellipsoidal earth models.
Calculate the great circle distance between two addresses. Draw a direct route between two airports, or multiple airport pairs. Draw range rings (concentric circles) around a point. Calculate coordinates at a given bearing and distance. Coordinate Converter.
How does the Great Circle Mapper calculate distances and paths? Why does the example in Ed Williams' Aviation Formulary calculate a different distance for LAX-JFK? Using The Great Circle Mapper's Maps
Calculation of Great Circle Distance. Enter Longitute and Latitute of both places (decimal degrees): Long1:
Great Circle Map displays the shortest route between airports and calculates the distance. It draws geodesic flight paths on top of Google maps, so you can create your own route map.
