EPSG:CODE

RT90 to ETRS89 (1)

EPSG:4124 → EPSG:4258

Coordinate Reference Systems

Source CRS
EPSG:4124
RT90
Geographic 2D
Target CRS
EPSG:4258
ETRS89
Geographic 2D

Transform Coordinates

Remarks

Derived at 22 points in 1993. Replaced by RT90 to SWEREF99 (1) (code 1895) from 2001. This transformation is actually between ETRS89 and RR92. RR92 is a geographic 3D CRS where the horizontal component is RT90.

Frequently Asked Questions

How do I convert RT90 to ETRS89 coordinates?

Use the coordinate transformation tool above to convert RT90 (EPSG:4124) to ETRS89 (EPSG:4258). Enter your source coordinates and click Transform. This uses the Coordinate Frame rotation (geog2D domain) method with 0.5m accuracy.

How do I transform RT90 to ETRS89 using Proj4js?

Use proj4.defs to define both EPSG:4124 and EPSG:4258, then call proj4(source, target, [x, y]) to convert coordinates programmatically.

What is the accuracy of the RT90 to ETRS89 transformation?

This transformation (EPSG:1437) has an accuracy of 0.5m using the Coordinate Frame rotation (geog2D domain) method. Area of use: Sweden.