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ESRI:102144 · Western Sahara

Merchich (degrees) UTM Zone 28N to KML & KMZ

Merchich (degrees) UTM Zone 28N (ESRI:102144) is a Transverse Mercator (UTM) coordinate system on the Merchich (degrees) UTM Zone 28N datum, with coordinates in metres. Its official area of use is: Western Sahara.

  • Converter already set to ESRI:102144
  • Latitude and longitude on WGS 84, as Google Earth uses
  • Download the point as KML
Convert a spreadsheet Windows app
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Good to know

  • Pick the UTM zone by longitude. Points outside the zone's area of use are flagged after conversion.
  • Datum: Treated as WGS 84, no shift (the datums agree to about a metre or better).

Convert a whole spreadsheet

  1. Open the web app or the Windows app, and paste your rows from Excel or open a CSV file.
  2. Under Coordinate system, search for “102144” and pick Merchich (degrees) UTM Zone 28N.
  3. Check one point you know on the map, then press Save KML or Save KMZ and open it in Google Earth.

Common mistakes with Merchich (degrees) UTM Zone 28N

  • Feet entered as metres. Merchich (degrees) UTM Zone 28N is in metres. Coordinates copied from a drawing in feet must be converted first, or every point moves outwards from the grid's origin.
  • Forgetting the datum. Merchich (degrees) UTM Zone 28N is not on WGS 84: treated as WGS 84, no shift (the datums agree to about a metre or better). Picking a WGS 84 grid with the same projection instead leaves the points off by that amount.
  • Points outside the grid's area. Merchich (degrees) UTM Zone 28N is meant for Western Sahara. Points well outside that area convert with growing error; the converter flags them so you can choose the right grid.
  • A local site grid. If every point is off by the same distance and direction, the drawing may be on a local site grid. Calibrate on three or more known control points instead.

New to this? Read how to convert easting and northing to latitude and longitude.