EPSG:9977 · United Kingdom
FNL22 Grid to KML & KMZ
FNL22 Grid (EPSG:9977) is a Transverse Mercator coordinate system on the FNL22 Grid datum, with coordinates in metres. Its official area of use is: United Kingdom (UK) - on or related to the rail route from Inverness to Thurso and Wick.
- Converter already set to EPSG:9977
- 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 “9977” and pick FNL22 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:9977
Five points inside the area of use of FNL22 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 | 58.02000° N | 3.80000° W | 139,618.95 | 185,338.35 |
| Towards the north-west | 58.39200° N | 4.28000° W | 111,546.18 | 226,872.33 |
| Towards the north-east | 58.39200° N | 3.32000° W | 167,691.72 | 226,872.33 |
| Towards the south-west | 57.64800° N | 4.28000° W | 110,957.33 | 144,008.38 |
| Towards the south-east | 57.64800° N | 3.32000° W | 168,280.57 | 144,008.38 |
Common mistakes with FNL22 Grid
- Easting and northing swapped. In FNL22 Grid the middle of the grid is near easting 139,618.95 and northing 185,338.35. If your easting column holds numbers like 185,338.35, the columns are the wrong way round and every point lands far away: swap them before converting.
- Feet entered as metres. FNL22 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. FNL22 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. FNL22 Grid is meant for United Kingdom (UK) - on or related to the rail route from Inverness to Thurso and Wick. 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.