Great Circle Calculator

Intersections Calculator
For Great Circle Routes
Using Spherical Trig

Line 1

Point 1

Point 2
Latitude ( - south):
Longitude ( - west):
Great Circle Distance: Grid Units:
True Bearing:

Line 2

Point 1

Point 2
Latitude ( - south):
Longitude ( - west):
Great Circle Distance:
True Bearing:

Intersection Point

Latitude ( - south):
Longitude ( - west):
Calculate or enter
bearings of lines first.

Intersection of Line 1 Great Circle with given Latitude

Required Latitude ( - south):
Longitude answer 1 ( - west):
Longitude answer 2 ( - west):

Latest News

August 2012
We have been providing a live tracking map for Marshall Ulrich during his Badwater Ultramarathon and Circumnavigation of Death Valley National Park.