EPSG:5519 · New Zealand
CI1979 / Chatham Islands Map Grid to KML & KMZ
CI1979 / Chatham Islands Map Grid (EPSG:5519) is a Transverse Mercator coordinate system on the CI1979 datum, with coordinates in metres. Its official area of use is: New Zealand - Chatham Islands group - onshore.
- Converter already set to EPSG:5519
- 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 “5519” and pick CI1979 / Chatham Islands Map Grid.
- 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:5519
Five points inside the area of use of CI1979 / Chatham Islands Map Grid, 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 | 43.97000° S | 176.39500° W | 358,402.18 | 653,275.30 |
| Towards the north-west | 43.56800° S | 176.90800° W | 317,015.69 | 697,865.20 |
| Towards the north-east | 43.56800° S | 175.88200° W | 399,902.11 | 697,760.35 |
| Towards the south-west | 44.37200° S | 176.90800° W | 317,457.20 | 608,531.27 |
| Towards the south-east | 44.37200° S | 175.88200° W | 399,232.93 | 608,426.31 |
Common mistakes with CI1979 / Chatham Islands Map Grid
- Easting and northing swapped. In CI1979 / Chatham Islands Map Grid the middle of the grid is near easting 358,402.18 and northing 653,275.30. If your easting column holds numbers like 653,275.30, the columns are the wrong way round and every point lands far away: swap them before converting.
- Feet entered as metres. CI1979 / Chatham Islands Map Grid 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. CI1979 / Chatham Islands Map Grid 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. CI1979 / Chatham Islands Map Grid is meant for New Zealand - Chatham Islands group - 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.