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Distance Calculator
Calculate the distance between two geographic coordinates using the Haversine formula.
Distance through the Earth
This calculator calculates the distance from one point on the Earth to another point, going through the Earth, instead of going across the surface.
Earth Distance Calculator
The Earth Distance Calculator is a handy tool for measuring the distance between two points on the Earth's surface, as well as the distance between those two points if they were connected by a straight tunnel through the Earth's core.
Conversion between Gauss planar rectangular coordinates and geographic coordinates and vice versa
The page contains online calculators for converting from geographic coordinates to Gauss planar rectangular coordinates and back (the formulas for the Krasovsky reference ellipsoid are used).
The length of arc of an Earth's parallel at a given latitude
This online calculator converts the arc length of an Earth's parallel at a given latitude from degrees to meters.
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