EPSG:3338 · United States
NAD83 / Alaska Albers to KML & KMZ
NAD83 / Alaska Albers (EPSG:3338) is a aea coordinate system on the NAD83 datum, with coordinates in metres. Its official area of use is: United States (USA) - Alaska.
- Converter already set to EPSG:3338
- 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 “3338” and pick NAD83 / Alaska Albers.
- 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:3338
Five points inside the area of use of NAD83 / Alaska Albers, 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 | 61.35000° N | 158.78500° W | -254,894.82 | 1,272,467.93 |
| Towards the north-west | 67.38000° N | 176.06200° W | -935,425.10 | 2,092,567.87 |
| Towards the north-east | 67.38000° N | 141.50800° W | 536,351.76 | 1,986,340.61 |
| Towards the south-west | 55.32000° N | 176.06200° W | -1,374,392.62 | 820,157.72 |
| Towards the south-east | 55.32000° N | 141.50800° W | 788,045.89 | 664,081.13 |
Common mistakes with NAD83 / Alaska Albers
- Easting and northing swapped. In NAD83 / Alaska Albers the middle of the grid is near easting -254,894.82 and northing 1,272,467.93. If your easting column holds numbers like 1,272,467.93, the columns are the wrong way round and every point lands far away: swap them before converting.
- Feet entered as metres. NAD83 / Alaska Albers 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. NAD83 / Alaska Albers 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. NAD83 / Alaska Albers is meant for United States (USA) - Alaska. 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.