EPSG:CODE

RGF93 v1 to ETRS89 (1)

EPSG:4171 → EPSG:4258

Deprecated

Coordinate Reference Systems

Source CRS
EPSG:4171
ETRS89-FRA [RGF93 v1]
Geographic 2D
Target CRS
EPSG:4258
ETRS89
Geographic 2D

Transform Coordinates

Remarks

RGF93 v1 is a national realization of ETRS89. May be taken as approximate transformation RGF93 v1 to WGS 84 - see code 1671.

Frequently Asked Questions

How do I convert ETRS89-FRA [RGF93 v1] to ETRS89 coordinates?

Use the coordinate transformation tool above to convert ETRS89-FRA [RGF93 v1] (EPSG:4171) to ETRS89 (EPSG:4258). Enter your source coordinates and click Transform. This uses the Geocentric translations (geog2D domain) method with 0.1m accuracy.

How do I transform ETRS89-FRA [RGF93 v1] to ETRS89 using Proj4js?

Use proj4.defs to define both EPSG:4171 and EPSG:4258, then call proj4(source, target, [x, y]) to convert coordinates programmatically.

What is the accuracy of the ETRS89-FRA [RGF93 v1] to ETRS89 transformation?

This transformation (EPSG:1591) has an accuracy of 0.1m using the Geocentric translations (geog2D domain) method. Area of use: France.