Netherlands RD New (Amersfoort) to KML & KMZ

About Netherlands RD New (Amersfoort)

RD New (Rijksdriehoeksmeting) is the Dutch national grid, an oblique stereographic projection centred on Amersfoort on the Bessel 1841 ellipsoid. A published seven-parameter shift takes it to WGS 84.

Where it's used: The Netherlands: cadastre (Kadaster), municipal and engineering surveys.

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 “28992” and pick Amersfoort / RD New.
3. Check one point you know on the map, then press Save KML or Save KMZ (with photos) and open it in Google Earth.

Common mistakes with Netherlands RD New (Amersfoort)

• Feet entered as metres. Netherlands RD New (Amersfoort) 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. Netherlands RD New (Amersfoort) is not on WGS 84: published 7-parameter shift (typically 1–2 m). Picking a WGS 84 grid with the same projection instead leaves the points off by that amount.
• Points outside the grid's area. Netherlands RD New (Amersfoort) is meant for Netherlands - onshore, including Waddenzee, Dutch Wadden Islands and 12-mile offshore coastal zone. 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.

Before you rely on it

The official RDNAPTRANS™ transformation is more exact than the seven-parameter shift; calibrate on known RD points for sub-metre work. Always check one known control point before sending a file out.