EPSG:21897 · Colombia
Bogota 1975 / Colombia Bogota zone to KML & KMZ
Bogota 1975 / Colombia Bogota zone (EPSG:21897) is a Transverse Mercator coordinate system on the Bogota 1975 datum, with coordinates in metres. Its official area of use is: Colombia - onshore between 1°30'W and 1°30'E of Bogota (75°35'W and 72°35'W of Greenwich).
- Converter already set to EPSG:21897
- Latitude and longitude on WGS 84, as Google Earth uses
- Download the point as KML
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Good to know
- Datum: Published 3-parameter shift (typically a few metres).
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 “21897” and pick Bogota 1975 / Colombia Bogota zone.
- 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:21897
Five points inside the area of use of Bogota 1975 / Colombia Bogota zone, 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 | 4.65500° N | 74.08500° W | 999,168.33 | 1,006,502.21 |
| Towards the north-west | 8.95400° N | 74.98800° W | 899,863.89 | 1,482,053.56 |
| Towards the north-east | 8.95400° N | 73.18200° W | 1,098,480.69 | 1,482,051.36 |
| Towards the south-west | 0.35600° N | 74.98800° W | 898,642.38 | 531,134.87 |
| Towards the south-east | 0.35600° N | 73.18200° W | 1,099,691.19 | 531,134.78 |
Common mistakes with Bogota 1975 / Colombia Bogota zone
- Easting and northing swapped. In Bogota 1975 / Colombia Bogota zone the middle of the grid is near easting 999,168.33 and northing 1,006,502.21. If your easting column holds numbers like 1,006,502.21, the columns are the wrong way round and every point lands far away: swap them before converting.
- Feet entered as metres. Bogota 1975 / Colombia Bogota zone 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. Bogota 1975 / Colombia Bogota zone is not on WGS 84: published 3-parameter shift (typically a few metres). Picking a WGS 84 grid with the same projection instead leaves the points off by that amount.
- Points outside the grid's area. Bogota 1975 / Colombia Bogota zone is meant for Colombia - onshore between 1°30'W and 1°30'E of Bogota (75°35'W and 72°35'W of Greenwich). 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.