EPSG:3367 · Mauritania
IGN Astro 1960 / UTM zone 28N to KML & KMZ
IGN Astro 1960 / UTM zone 28N (EPSG:3367) is a Transverse Mercator (UTM) coordinate system on the IGN Astro 1960 datum, with coordinates in metres. Its official area of use is: Mauritania - onshore west of 12°W.
- Converter already set to EPSG:3367
- Latitude and longitude on WGS 84, as Google Earth uses
- Download the point as KML
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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
- Open the web app or the Windows app, and paste your rows from Excel or open a CSV file.
- Under Coordinate system, search for “3367” and pick IGN Astro 1960 / UTM zone 28N.
- Check one point you know on the map, then press Save KML or Save KMZ and open it in Google Earth.
Check points for EPSG:3367
Five points inside the area of use of IGN Astro 1960 / UTM zone 28N, with their latitude and longitude on WGS 84 and their easting and northing in this grid (metres). Enter an easting and northing in the converter above: you should get the latitude and longitude shown, to a few centimetres.
| Point | Latitude | Longitude | Easting | Northing |
|---|---|---|---|---|
| Middle of the area of use | 19.09000° N | 14.54000° W | 548,390.41 | 2,110,667.05 |
| Towards the north-west | 21.71200° N | 16.06400° W | 389,945.26 | 2,401,124.74 |
| Towards the north-east | 21.71200° N | 13.01600° W | 705,236.22 | 2,402,061.58 |
| Towards the south-west | 16.46800° N | 16.06400° W | 386,421.71 | 1,820,843.09 |
| Towards the south-east | 16.46800° N | 13.01600° W | 711,810.56 | 1,821,583.99 |
Common mistakes with IGN Astro 1960 / UTM zone 28N
- Easting and northing swapped. In IGN Astro 1960 / UTM zone 28N the middle of the grid is near easting 548,390.41 and northing 2,110,667.05. If your easting column holds numbers like 2,110,667.05, the columns are the wrong way round and every point lands far away: swap them before converting.
- Feet entered as metres. IGN Astro 1960 / 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. IGN Astro 1960 / 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. IGN Astro 1960 / UTM zone 28N is meant for Mauritania - onshore west of 12°W. 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.