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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.
- 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.
A map from the Great Circle Mapper. Great Circle Mapper . FAQ Featured Maps More Home Map Distances. From To ... More Home Map Distances. From To Initial Heading Magnetic Heading Distance Time; Total: 85,607 nm: 181:53: Average: 3,171 nm: Show Hide latitude and longitude Show Hide fractional heading 27 segment path: ORD (41°58'37"N 87°54'29"W ...
Natural questions are to seek the great circle distance between two specified points and true course at points along the route. The required spherical trigonometric formulae are greatly simplified if angles and distances are measured in the appropriate natural units, which are both radians!
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.
