EPSG:4390 · Malaysia
Kertau 1968 / Johor Grid to KML & KMZ
Kertau 1968 / Johor Grid (EPSG:4390) is a cass coordinate system on the Kertau 1968 datum, with coordinates in metres. Its official area of use is: Malaysia - West Malaysia - Johor.
- Converter already set to EPSG:4390
- 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 “4390” and pick Kertau 1968 / Johor 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:4390
Five points inside the area of use of Kertau 1968 / Johor 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 | 2.08000° N | 103.52000° E | -4,567.84 | 4,148.98 |
| Towards the north-west | 2.60200° N | 102.87200° E | -76,627.21 | 61,890.65 |
| Towards the north-east | 2.60200° N | 104.16800° E | 67,495.02 | 61,885.77 |
| Towards the south-west | 1.55800° N | 102.87200° E | -76,677.73 | -53,558.82 |
| Towards the south-east | 1.55800° N | 104.16800° E | 67,539.28 | -53,561.75 |
Common mistakes with Kertau 1968 / Johor Grid
- Which column is which. In Kertau 1968 / Johor Grid eastings and northings near the middle of the grid are of similar size (about -4,567.84 and 4,148.98), so a swap won't be obvious from the numbers. Check that the first point lands where you expect it before converting the rest.
- Feet entered as metres. Kertau 1968 / Johor 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. Kertau 1968 / Johor Grid 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. Kertau 1968 / Johor Grid is meant for Malaysia - West Malaysia - Johor. 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.