EPSG:31300 · Belgium
BD72 / Belge Lambert 72 to KML & KMZ
BD72 / Belge Lambert 72 (EPSG:31300) is a Lambert Conformal Conic coordinate system on the BD72 datum, with coordinates in metres. Its official area of use is: Belgium - onshore.
- Converter already set to EPSG:31300
- Latitude and longitude on WGS 84, as Google Earth uses
- Download the point as KML
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Good to know
- Datum: Published 7-parameter shift (typically 1–2 m).
Convert a whole spreadsheet
- Open the web app or the Windows app, and paste your rows from Excel or open a CSV file.
- Under Coordinate system, search for “31300” and pick BD72 / Belge Lambert 72.
- Check one point you know on the map, then press Save KML or Save KMZ and open it in Google Earth.
Common mistakes with BD72 / Belge Lambert 72
- Feet entered as metres. BD72 / Belge Lambert 72 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. BD72 / Belge Lambert 72 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. BD72 / Belge Lambert 72 is meant for Belgium - onshore. 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.