EPSG:9869 · United Kingdom
MRH21 Grid to KML & KMZ
MRH21 Grid (EPSG:9869) is a Transverse Mercator coordinate system on the MRH21 Grid datum, with coordinates in metres. Its official area of use is: United Kingdom (UK) - on or related to Midland Rail Hub, covering routes through Cardiff, Bristol, Gloucester, Derby, Birmingham, Leicester, and Lincoln.
- Converter already set to EPSG:9869
- Latitude and longitude on WGS 84, as Google Earth uses
- Download the point as KML
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Good to know
- 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 “9869” and pick MRH21 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:9869
Five points inside the area of use of MRH21 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 | 52.30500° N | 1.81500° W | 226,263.83 | 266,307.76 |
| Towards the north-west | 52.87800° N | 2.68800° W | 167,501.86 | 330,439.69 |
| Towards the north-east | 52.87800° N | 0.94200° W | 285,052.39 | 330,415.15 |
| Towards the south-west | 51.73200° N | 2.68800° W | 165,937.97 | 202,924.53 |
| Towards the south-east | 51.73200° N | 0.94200° W | 286,563.44 | 202,899.73 |
Common mistakes with MRH21 Grid
- Easting and northing swapped. In MRH21 Grid the middle of the grid is near easting 226,263.83 and northing 266,307.76. If your easting column holds numbers like 266,307.76, the columns are the wrong way round and every point lands far away: swap them before converting.
- Feet entered as metres. MRH21 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. MRH21 Grid 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. MRH21 Grid is meant for United Kingdom (UK) - on or related to Midland Rail Hub, covering routes through Cardiff, Bristol, Gloucester, Derby, Birmingham, Leicester, and Lincoln. 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.