Great Circle Calculator Cirrus

This calculator calculates the great circle distance between two turnpoints. Enter the coordinates (see Australian turnpoint listing) for the turnpoints at the start and finish of the leg and then press the button to calculate the length of the leg.

Coordinates may be entered using decimal minutes, or minutes and seconds.

Input Turnpoint Coordinates
Latitude Longitude
 Start °   '   "   °   '   "  
 Finish  °   '   "   °   '   "  

    (Note: this calculator requires a JavaScript capable browser)

 
Distance between turnpoints kms.
Initial bearing between turnpoints deg. true.

To compensate for magnetic variation add a west variation to the true bearing, subtract an east variation from the true bearing.

The author does not accept any responsibility for the accuracy of this calculator. Please verify your results.

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