NAD83(HARN) / Maine CS2000 Central to KML & KMZ

Good to know

• Datum: Treated as WGS 84, no shift (the datums agree to about a metre or better).

Convert a whole spreadsheet

1. Open the web app or the Windows app, and paste your rows from Excel or open a CSV file.
2. Under Coordinate system, search for “3464” and pick NAD83(HARN) / Maine CS2000 Central.
3. 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:3464

Five points inside the area of use of NAD83(HARN) / Maine CS2000 Central, 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.

Common mistakes with NAD83(HARN) / Maine CS2000 Central

• Easting and northing swapped. In NAD83(HARN) / Maine CS2000 Central the middle of the grid is near easting 495,709.77 and northing 234,466.49. If your easting column holds numbers like 234,466.49, the columns are the wrong way round and every point lands far away: swap them before converting.
• Feet entered as metres. NAD83(HARN) / Maine CS2000 Central 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(HARN) / Maine CS2000 Central 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(HARN) / Maine CS2000 Central is meant for United States (USA) - Maine between approximately 69°40'W and 68°25'W. The area is bounded by the following: Beginning at the point determined by the intersection of the Maine State line and the County Line between Aroostook and Somerset Counties, thence northeasterly along the state line to the intersection of the Fort Kent - Frenchville town line, thence southerly along this town line to the intersection with the New Canada Plantation - T17 R5 WELS town line, thence continuing southerly along town lines to the northeast corner of Penobscot County, thence continuing southerly along the Penobscot County line to the intersection of the Woodville - Mattawamkeag town line (being determined by the Penobscot River), thence along the Penobscot River to the Enfield - Lincoln town line, thence southeasterly along the Enfield - Lincoln town line and the Enfield - Lowell town line to the Passadumkeag - Edinburg town line, thence south-southeasterly along town lines to the intersection of the Hancock County line, thence southerly along the county line to the intersection of the Otis - Mariaville town line, thence southerly along the Otis - Mariaville town line to the Ellsworth city line, thence southerly along the Ellsworth city line to the intersection of the Surry - Trenton town line, thence southerly along the easterly town lines of Surry, Blue Hill, Brooklin, Deer Isle, and Stonington to the Knox County line, thence following the Knox County line to the boundary of the State of Maine as determined by Maritime law, thence following the State boundary westerly to the intersection of the Sagadahoc - Lincoln county line, thence northerly along the easterly boundary of the Maine 2000 West Zone, as defined, to the point of beginning. 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.