EPSG:3849 — ETRS89-SWE [SWEREF 99] / RT90 2.5 gon O emulation

Projected · Sweden - 2.5 gon E

Export Formats

OGC WKT

PROJCS[
    "SWEREF99 / RT90 2.5 gon O emulation",
    GEOGCS[
        "SWEREF99",
        DATUM[
            "SWEREF99",
            SPHEROID["GRS 1980",6378137,298.257222101],
            TOWGS84[0,0,0,0,0,0,0]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4619"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",20.3063166666667],
    PARAMETER["scale_factor",1.0000052],
    PARAMETER["false_easting",1500102.765],
    PARAMETER["false_northing",-670.706],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","3849"]
]

WKT2

PROJCRS[
    "ETRS89-SWE [SWEREF 99] / RT90 2.5 gon O emulation",
    BASEGEOGCRS[
        "ETRS89-SWE [SWEREF 99]",
        DATUM[
            "SWEREF 99",
            ELLIPSOID[
                "GRS 1980",
                6378137,
                298.257222101,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7019]
            ],
            ANCHOREPOCH[1999.5],
            ID["EPSG",6619]
        ],
        ID["EPSG",4619]
    ],
    CONVERSION[
        "RT90 zone 2.5 gon O emulation",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            0,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            20.3063166666669,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            1.0000052,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            1500102.765,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            -670.706,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",17343]
    ],
    CS[Cartesian,2,ID["EPSG",4530]],
    AXIS["Northing (X)",north],
    AXIS["Easting (Y)",east],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",3849]
]

PROJ.4

+proj=tmerc +lat_0=0 +lon_0=20.3063166666667 +k=1.0000052 +x_0=1500102.765 +y_0=-670.706 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:3849", "+proj=tmerc +lat_0=0 +lon_0=20.3063166666667 +k=1.0000052 +x_0=1500102.765 +y_0=-670.706 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 3849,
  "name": "ETRS89-SWE [SWEREF 99] / RT90 2.5 gon O emulation",
  "kind": "projected",
  "area": "Sweden - 2.5 gon E",
  "unit": "metre",
  "bbox": [
    63.37,
    18.4,
    69.07,
    22.2
  ],
  "proj4": "+proj=tmerc +lat_0=0 +lon_0=20.3063166666667 +k=1.0000052 +x_0=1500102.765 +y_0=-670.706 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (3849, 'EPSG', 3849, '+proj=tmerc +lat_0=0 +lon_0=20.3063166666667 +k=1.0000052 +x_0=1500102.765 +y_0=-670.706 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["SWEREF99 / RT90 2.5 gon O emulation",GEOGCS["SWEREF99",DATUM["SWEREF99",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4619"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",20.3063166666667],PARAMETER["scale_factor",1.0000052],PARAMETER["false_easting",1500102.765],PARAMETER["false_northing",-670.706],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3849"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=20.3063166666667"
  "+k=1.0000052"
  "+x_0=1500102.765"
  "+y_0=-670.706"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

3849=PROJCS["SWEREF99 / RT90 2.5 gon O emulation",GEOGCS["SWEREF99",DATUM["SWEREF99",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4619"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",20.3063166666667],PARAMETER["scale_factor",1.0000052],PARAMETER["false_easting",1500102.765],PARAMETER["false_northing",-670.706],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3849"]]

Related Coordinate Systems

Available Transformations (3)

Transformations inherited from base CRS: EPSG:4619 (ETRS89-SWE [SWEREF 99])

Transformation	Source → Target	Accuracy (m)
RT90 to ETRS89-SWE [SWEREF 99] (1)	4124 → 4619	0.1
ETRS89-SWE [SWEREF 99] to WGS 84 (1)	4619 → 4326	1
SWEREF99 to ETRS89 (1) Deprecated	4619 → 4258	0

Other CRS using SWEREF 99 (23)

Frequently Asked Questions

How do I add EPSG:3849 to GeoServer?

Add the following definition to your GeoServer configuration:

3849=PROJCS["SWEREF99 / RT90 2.5 gon O emulation",GEOGCS["SWEREF99",DATUM["SWEREF99",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4619"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",20.3063166666667],PARAMETER["scale_factor",1.0000052],PARAMETER["false_easting",1500102.765],PARAMETER["false_northing",-670.706],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3849"]]

Read the full GeoServer guide →

How do I add EPSG:3849 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (3849, 'EPSG', 3849, '+proj=tmerc +lat_0=0 +lon_0=20.3063166666667 +k=1.0000052 +x_0=1500102.765 +y_0=-670.706 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["SWEREF99 / RT90 2.5 gon O emulation",GEOGCS["SWEREF99",DATUM["SWEREF99",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4619"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",20.3063166666667],PARAMETER["scale_factor",1.0000052],PARAMETER["false_easting",1500102.765],PARAMETER["false_northing",-670.706],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3849"]]');

Read the full PostGIS guide →

How do I add EPSG:3849 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=20.3063166666667"
  "+k=1.0000052"
  "+x_0=1500102.765"
  "+y_0=-670.706"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:3849 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:3849", "+proj=tmerc +lat_0=0 +lon_0=20.3063166666667 +k=1.0000052 +x_0=1500102.765 +y_0=-670.706 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

Read the full Proj4js guide →

Type

Projected

Unit

metre

Geodetic CRS

ETRS89-SWE [SWEREF 99]

Datum

SWEREF 99

Ellipsoid

GRS 1980

Prime Meridian

Greenwich

Area of Use

Sweden - 2.5 gon E

Sweden - communes between approximately 19°10'E and 21°25'E. See information source for map.

Coordinate System

Cartesian 2D CS. Axes: northing, easting (X,Y). Orientations: north, east. UoM: m.

Center Coordinates

1499818.43 7346738.68

Projected Bounds

7665768.46 1404738.971575618.63 7030410.66

WGS84 Bounds

69.07 18.4022.20 63.37

Data Source

EPSG

Information Source

Lantmateriverket (National Land Survey of Sweden). http://www.lantmateriet.se

Revision Date

2025-10-20

Scope

User-defined CRS in GPS receiver.

Remarks

Approximates RT90 2.5 gon O (CRS code 3023) to an accuracy of 0.2m.

EPSG

3849