GIS & Mapping Tools

Free GIS and mapping calculators — distance and bearing between two latitude and longitude points, by Vincenty on WGS-84 and by great circle.

2 tools

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Geodetic Distance

Measure the distance and bearing between two latitude and longitude points, by Vincenty on the WGS-84 ellipsoid and by great circle.

Also in GIS & Mapping

Tools from other categories tagged with GIS & Mapping

Land Area

Get a plot's area from its corner coordinates or a bearing-and-distance traverse, in square metres, acres, hectares, katha and bigha.

Why These Tools

Two tools can disagree by several hundred metres about the same pair of coordinates, and both can be right, because one is treating the planet as a sphere and the other as the flattened ellipsoid it really is. Geodetic Distance Calculator prints both answers side by side rather than picking one quietly: Vincenty on WGS-84 for the figure worth quoting, a great circle for comparison, plus the departure bearing, the arrival bearing and the midpoint of the route.

Land Area Calculator is listed here as well, because a parcel described by its corners is already a piece of cadastral geometry. Map scale, topographic profiles, coordinate projections, boundary offsets and plot splitting follow on this page.

GIS & Mapping Tools