NGO 1948 (Oslo) to WGS 84 (1)
EPSG:8639±3 m- Method:
- Concatenated operation
- Area of use:
- Norway - onshore
- Scope:
- Military survey.
- NGO 1948 (Oslo) to NGO1948 (1) (null)
- NGO 1948 to WGS 84 (1) (null)
Convert NGO 1948 (Oslo) to WGS 84
Convert coordinates from NGO 1948 (Oslo) (EPSG:4817) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
Official EPSG transformation from NGO 1948 (Oslo) to WGS 84
The EPSG Geodetic Parameter Dataset defines 1 transformation between NGO 1948 (Oslo) (EPSG:4817) and WGS 84 (EPSG:4326). Its parameters, accuracy and area of use are listed below.
Convert EPSG:4817 to EPSG:4326 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4817", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Source: EPSG:4817 — NGO 1948 (Oslo)
geographic system using latitude and longitude on an ellipsoid · Area of use: Norway - onshore
+proj=longlat +a=6377492.018 +rf=299.1528128 +pm=oslo +towgs84=278.3,93,474.5,7.889,0.05,-6.61,6.21 +no_defs +type=crsMore about EPSG:4817 →
Target: EPSG:4326 — WGS 84
geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)
+proj=longlat +datum=WGS84 +no_defs +type=crsMore about EPSG:4326 →
Frequently asked questions
- How accurate is converting NGO 1948 (Oslo) to WGS 84?
- The most accurate official EPSG transformation between these systems is accurate to about ±3 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation 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.