EPSG:3992 · US Virgin Islands
Puerto Rico / St. Croix to KML & KMZ
Puerto Rico / St. Croix (EPSG:3992) is a Lambert Conformal Conic coordinate system on the Puerto Rico datum, with coordinates in US survey feet. Its official area of use is: US Virgin Islands - onshore - St Croix, St John, and St Thomas.
- Converter already set to EPSG:3992
- Latitude and longitude on WGS 84, as Google Earth uses
- Download the point as KML
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Good to know
- Coordinates are in US survey feet. Enter them in those units, not metres.
- 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 “3992” and pick Puerto Rico / St. Croix.
- 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:3992
Five points inside the area of use of Puerto Rico / St. Croix, with their latitude and longitude on WGS 84 and their easting and northing in this grid (US survey feet). 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 | 18.03000° N | 64.80000° W | 1,067,277.61 | 174,651.88 |
| Towards the north-west | 18.27600° N | 64.97400° W | 1,006,121.06 | 263,467.52 |
| Towards the north-east | 18.27600° N | 64.62600° W | 1,126,840.13 | 264,544.31 |
| Towards the south-west | 17.78400° N | 64.97400° W | 1,007,544.82 | 84,816.30 |
| Towards the south-east | 17.78400° N | 64.62600° W | 1,128,603.39 | 85,896.11 |
Common mistakes with Puerto Rico / St. Croix
- Easting and northing swapped. In Puerto Rico / St. Croix the middle of the grid is near easting 1,067,277.61 and northing 174,651.88. If your easting column holds numbers like 174,651.88, the columns are the wrong way round and every point lands far away: swap them before converting.
- Metres entered as feet. Puerto Rico / St. Croix is in US survey feet. Enter the values as they are; converting them to metres first puts every point in the wrong place.
- Forgetting the datum. Puerto Rico / St. Croix 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. Puerto Rico / St. Croix is meant for US Virgin Islands - onshore - St Croix, St John, and St Thomas. 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.