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Convert ETRS89-NOR [EUREF89] to NGO 1948

Convert coordinates from ETRS89-NOR [EUREF89] (EPSG:10875) to NGO 1948 (EPSG:4273) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-10875-to-epsg-4273

Official EPSG transformation from ETRS89-NOR [EUREF89] to NGO 1948

The EPSG Geodetic Parameter Dataset defines 1 transformation between ETRS89-NOR [EUREF89] (EPSG:10875) and NGO 1948 (EPSG:4273). Its parameters, accuracy and area of use are listed below.

ETRS89-NOR [EUREF89] to NGO 1948 (2)

EPSG:10854±0.1 m
Method:
Geographic2D Offsets by TIN Interpolation (JSON)
Area of use:
Norway - onshore
Scope:
Transformation of coordinates at 0.1m level of accuracy.

Grid file: no_kv_ETRS89NO_NGO48_TIN.json

Convert EPSG:10875 to EPSG:4273 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:10875", "EPSG:4273", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:10875ETRS89-NOR [EUREF89]

geographic system using latitude and longitude on an ellipsoid · Area of use: Norway

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs
More about EPSG:10875

Target: EPSG:4273NGO 1948

geographic system using latitude and longitude on an ellipsoid · Area of use: Norway - onshore

+proj=longlat +a=6377492.018 +rf=299.1528128 +towgs84=278.3,93,474.5,7.889,0.05,-6.61,6.21 +no_defs +type=crs
More about EPSG:4273

Frequently asked questions

How accurate is converting ETRS89-NOR [EUREF89] to NGO 1948?
The most accurate official EPSG transformation between these systems is accurate to about ±0.1 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation (including the grid-shift files listed below) in a desktop GIS.
Does my data leave the browser when I use this converter?
No. All coordinate transformations are computed locally in your browser using proj4js. The coordinates you enter are never transmitted to any server.
Need the reverse? Convert EPSG:4273 to EPSG:10875