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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
The Great Circle Mapper. Draw you flight path on a map and calculate the great circle distance in nautical miles and kilometers. Get estimated flight time by choosing an aircraft type or entering the cruising speed.Click in the large textfield above to enter all the airports of your flight route!
Distance Output Earth model: Spherical (1'=1nm) WGS84/NAD83/GRS80 Clarke (1866)/NAD27 International Krasovsky Bessel (1841) WGS72 WGS66 FAI sphere User defined
The great circle distance d between two points with coordinates {lat1,lon1} and {lat2,lon2} is given by: d=acos (sin (lat1)*sin (lat2)+cos (lat1)*cos (lat2)*cos (lon1-lon2)) A mathematically equivalent formula, which is less subject to rounding error for short distances is:
18 sty 2024 · In our great circle calculator, we went for the WGS 84: a widespread model used even by GPS satellites. Here are the numbers: a = 6378137.8 m. a = 6 378 137.8\ \mathrm {m} a = 6378137.8 m; b ≈ 6356752.314140 m. b \approx 6 356 752.314140\ \mathrm {m} b ≈ 6356752.314140 m; and. f = 298.257223563.
Great Circle Map. 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.
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.
