Convert NTF to WGS 84

Convert coordinates from NTF (EPSG:4275) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

From

Input (lon, lat (decimal degrees))

Output (lon, lat (decimal degrees))

Direct link to this transformation: epsgtransform.com/transform/epsg-4275-to-epsg-4326

Official EPSG transformation from NTF to WGS 84

The EPSG Geodetic Parameter Dataset defines 1 transformation between NTF (EPSG:4275) and WGS 84 (EPSG:4326). Its parameters, accuracy and area of use are listed below.

NTF to WGS 84 (1)

EPSG:1193±2 m

Method:: Geocentric translations (geog2D domain)
Area of use:: France - onshore - mainland and Corsica
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

Parameter	Value	Unit
X-axis translation(tx)	-168	metre
Y-axis translation(ty)	-60	metre
Z-axis translation(tz)	320	metre

These same parameter values are used to transform to ETRS89. See NTF to ETRS89 (1) (code 1651).

Convert EPSG:4275 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4275", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4275 — NTF

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

+proj=longlat +ellps=clrk80ign +towgs84=-168,-60,320,0,0,0,0 +no_defs +type=crs

More about EPSG:4275 →

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=crs

More about EPSG:4326 →

Frequently asked questions

How accurate is converting NTF to WGS 84?: The most accurate official EPSG transformation between these systems is accurate to about ±2 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.

Need the reverse? Convert EPSG:4326 to EPSG:4275 →