ESRI:102471 · South Africa

Cape Lo17 to KML & KMZ

Cape Lo17 (ESRI:102471) is a Transverse Mercator coordinate system on the Cape Lo17 datum, with coordinates in metres. Its official area of use is: South Africa - west of 18~E.

  • Converter already set to ESRI:102471
  • Latitude and longitude on WGS 84, as Google Earth uses
  • Download the point as KML
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Good to know

  • 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 “102471” and pick Cape Lo17.
  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 Cape Lo17

  • Feet entered as metres. Cape Lo17 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. Cape Lo17 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. Cape Lo17 is meant for South Africa - west of 18~E. 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.