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UTM Coordinates

Tool to convert GPS coordinates to UTM and UTM coordinates to GPS (latitude, longitude) using the Universal Transverse Mercator system.

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UTM Coordinates -

Tag(s) : Geography

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UTM Coordinates

GPS to UTM Converter

 Reference Ellipsoid WGS84 (default)

UTM to GPS Converter

 Reference Ellipsoid WGS84 (default)

What is the Universal Transverse Mercator (UTM)?

Mercator Universal Transverse Projection is a cartographic projection of the Earth's surface onto a cylindrical surface based on a reference ellipsoid.

The surface of the Earth is cut into 60 spindles of 6 degrees each. The northern hemisphere and the southern hemisphere are distinct, giving 120 zones.

In order to obtain a plane representation, the projection uses the development of the cylinder tangent to the ellipsoid.

This projection system has the advantage of easily representing the distances because the coordinates are written in meters (or kilometers).

What is a reference Ellipsoid?

Any conversion is based on a reference ellipsoid which will allow an approximation of the terrestrial curvature before applanir.

Since 1984, in the majority of the world, it is the world geodetic system 84 (WGS84 - World Geodetic System 1984) that is the most widespread. It uses a half-axis ellipsoid (WGS84) $6378137$ meters, and first eccentricity $0.081819$.

How to calculate UTM coordinates from GPS coordinates?

Example: '12°N,34°E 'corresponds to zone 33S (northern hemisphere) and to position 3766214 meters north (latitudeà and 222908 meters east (longitude).

The formulas are quite long see: here (link)

How to calculate GPS coordinates from UTM coordinates?

Here again, the formulas are long and complicated, see Wikipedia: here (link)

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