EPSG systems

Guernsey: coordinate systems

2 current national systems, and 0 regional or world-wide systems that also cover this country. Every code opens its page: definition, parameters, proj4, WKT.

Projected systems 2

Plane X/Y coordinates (Easting, Northing), most often in metres: what plans, cadastre and surveys use.

Projected systems — Guernsey
Code Name Conversion
EPSG:3108 ETRS89 / Guernsey Grid Converts here
EPSG:3109 ETRS89 / Jersey Transverse Mercator Converts here

Which system should I use?

For a plan or a survey in this country, use the national system named by the specification or the cadastre. A UTM zone suits a project that spills over national zones; WGS 84 (EPSG:4326) is for exchanging with a GPS.

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