EPSG systems

EPSG:4814 RT38 (Stockholm)

Geographic system in latitude and longitude, in use: Sweden - onshore. Datum, ellipsoid and transformation to WGS 84 below.

EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.

System record
CodeEPSG:4814
NameRT38 (Stockholm)
TypeGeographic system
Area of use Sweden - onshore
Bounds W 10,93° · S 55,28° · E 24,17° · N 69,07°
Countries Sweden
DatumStockholm 1938 (Stockholm)
Ellipsoid Bessel 1841 a = 6377397.155 m · 1/f = 299.1528128
Prime meridianStockholm 18.05827777777778 degree
Unit degree (Lat north, Lon east)
Transformation to WGS 84 No simple transformation published (ellipsoid alone)
ScopeGeodesy.

proj4 definition

+proj=longlat +ellps=bessel +pm=stockholm +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:4814.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_RT38_Stockholm",DATUM["Stockholm_1938_(Stockholm)",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Stockholm",18.0582777777778],UNIT["Degree",0.0174532925199433]]

All systems — Sweden

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.