Enter lat/lon of points, 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 if either point is very close to a pole, the course may be inaccurate, because of its extreme sensitivity to position and inevitable rounding error.
Distance Units: Earth model:
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.
Distance Units: Earth model:
Enter "user defined" spheroid parameters here:
Calculation of Great Circle navigation and waypoints.
Without considering factors such as weather, winds, magnetic deviation and currents, the great circle track is the shortest distance between any two places on the surface of the Earth.
To navigate a great circle track adjustment of the airplane's course is continuous because the great circle track is a curve when plotted on a Mercator Chart.
Once you enter the latitude and longitude for origin and destination, tap 'Calculate' to display the 'true' course and distance.
To get waypoint information, enter the desired longitude limitation in the waypoint section then tap 'Calculate.'
AnyCalculator.com (Over 120 FREE Online Calculators For Almost Any Use.)
Rocking Chair Calculator (Fine tune your rocking chair to rock when you inhale and exhale.)
ExactWeather.com (Not Exact But Close Enough.)
Do not rely on these calculations without double checking using another source to verify your answers. If in doubt don't use these calculations.