EPSG Library · Europe

EPSG:2056 — CH1903+ / LV95

Source: EPSG Dataset via PROJ 9.5.1 · Updated 2026-10-05

Summary

EPSG:2056 (CH1903+ / LV95) is a projected coordinate reference system on the CH1903+ datum using the Hotine Oblique Mercator (variant B) method, with coordinates in metres. Area of use: Liechtenstein; Switzerland.

Type: projected
Datum: CH1903+
Units: metre
Axes: E, N

Definition

EPSG:2056 as published in the EPSG Dataset (PROJ 9.5.1).
Property	Value
EPSG code	EPSG:2056
Name	CH1903+ / LV95
Type	Projected CRS
Datum	CH1903+
Ellipsoid	Bessel 1841 (a = 6,377,397.155 m, 1/f = 299.152813)
Prime meridian	Greenwich
Projection method	Hotine Oblique Mercator (variant B)
Axes	Easting (E, east, metre); Northing (N, north, metre)
Scope	Cadastre, engineering survey, topographic mapping (large and medium scale).
Bounding box	5.96° to 10.49° longitude, 45.82° to 47.81° latitude

Area of use

Liechtenstein; Switzerland.

Projection parameters

Hotine Oblique Mercator (variant B) parameters.
Parameter	Value	Unit
Latitude of projection centre	46.95240556	degree
Longitude of projection centre	7.439583333	degree
Azimuth at projection centre	90	degree
Angle from Rectified to Skew Grid	90	degree
Scale factor at projection centre	1	unity
Easting at projection centre	2,600,000	metre
Northing at projection centre	1,200,000	metre

Example coordinates

A WGS 84 point at longitude 8.225°, latitude 46.815° (inside the area of use) has these coordinates in EPSG:2056:

Computed with PROJ using the EPSG default operation: axis order change (2D) + Inverse of CH1903+ to WGS 84 (1) + Swiss Oblique Mercator 1995.
Axis	Value	Unit
E	2,660,013.544	m
N	1,185,171.982	m

At this point the projection scale factor is 1.00000276 and the grid convergence is +0.573965°.

Open this conversion in the coordinate converter

Transformations to WGS 84

Candidate operations from the EPSG Dataset, best first as ranked by PROJ.
Operation	Accuracy	Area of use
axis order change (2D) + CH1903+ to WGS 84 (1) + axis order change (2D)	1 m	Liechtenstein; Switzerland.

Transformations change the datum, so each has an accuracy and an area of use. Choose the most accurate one that covers your data and record its name. See datum transformations.

Definitions and downloads

PROJ string

+proj=somerc +lat_0=46.9524055555556 +lon_0=7.43958333333333 +k_0=1 +x_0=2600000 +y_0=1200000 +ellps=bessel +units=m +no_defs +type=crs

A PROJ string cannot carry every EPSG detail (axis order, datum ensemble, transformations). Prefer WKT2 or the EPSG code itself.

Proj4js definition used by the converter

+proj=somerc +lat_0=46.9524055555556 +lon_0=7.43958333333333 +k_0=1 +x_0=2600000 +y_0=1200000 +ellps=bessel +units=m +towgs84=674.374,15.056,405.346 +no_defs

Datum shift from CH1903+ to WGS 84 (1) (EPSG accuracy 1 m), the best single Helmert operation for this area of use. Where PROJ prefers a grid-based or multi-step operation (see the table above), results can differ by up to that operation's accuracy.

WKT2:2019

PROJCRS["CH1903+ / LV95", BASEGEOGCRS["CH1903+", DATUM["CH1903+", ELLIPSOID["Bessel 1841",6377397.155,299.1528128, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4150]], CONVERSION["Swiss Oblique Mercator 1995", METHOD["Hotine Oblique Mercator (variant B)", ID["EPSG",9815]], PARAMETER["Latitude of projection centre",46.9524055555556, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8811]], PARAMETER["Longitude of projection centre",7.43958333333333, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8812]], PARAMETER["Azimuth at projection centre",90, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8813]], PARAMETER["Angle from Rectified to Skew Grid",90, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8814]], PARAMETER["Scale factor at projection centre",1, SCALEUNIT["unity",1], ID["EPSG",8815]], PARAMETER["Easting at projection centre",2600000, LENGTHUNIT["metre",1], ID["EPSG",8816]], PARAMETER["Northing at projection centre",1200000, LENGTHUNIT["metre",1], ID["EPSG",8817]]], CS[Cartesian,2], AXIS["(E)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["(N)",north, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Cadastre, engineering survey, topographic mapping (large and medium scale)."], AREA["Liechtenstein; Switzerland."], BBOX[45.82,5.96,47.81,10.49]], ID["EPSG",2056]]

Downloads

2056.prj — ESRI WKT for shapefiles
2056.wkt — OGC WKT2:2019

FAQ

What is EPSG:2056?

Where can EPSG:2056 be used?

Its area of use is: Liechtenstein; Switzerland.

Is EPSG:2056 in metres or degrees?

EPSG:2056 is projected, so coordinates are easting and northing in metres, not degrees.

How do I convert EPSG:2056 to latitude and longitude?

Transform from EPSG:2056 to EPSG:4326 (WGS 84). In GeoCAD Bridge open the coordinate converter with EPSG:2056 preselected, enter easting and northing, and choose WGS 84 as the target.

How accurate is the transformation from EPSG:2056 to WGS 84?

The most accurate EPSG transformation listed here is “axis order change (2D) + CH1903+ to WGS 84 (1) + axis order change (2D)”, with a stated accuracy of 1 m for Liechtenstein; Switzerland.. Always check the area of use before applying it.

Coordinate systems

Articles

Tools

References

IOGP. EPSG Geodetic Parameter Dataset, epsg.org/crs_2056.
PROJ 9.5.1 / pyproj 3.7.2, used to compute every value on this page.

Cite this page

GeoCAD Bridge. “EPSG:2056 — CH1903+ / LV95.” GeoCAD Bridge EPSG Library, updated 2026-10-05. https://www.geocadbridge.com/epsg/2056/