EPSG:CODE

Datum 73 to ETRS89 (3)

EPSG:4274 → EPSG:4258

Coordinate Reference Systems

Source CRS
EPSG:4274
Datum 73
Geographic 2D
Target CRS
EPSG:4258
ETRS89
Geographic 2D

Transform Coordinates

Remarks

Parameters calculated in 1998 using 9 common stations. Published in 2001. Replaces Datum 73 to ETRS89 (1) (code 1657). Replaced by Datum 73 to ETRS89 (5) (code 5037).

Frequently Asked Questions

How do I convert Datum 73 to ETRS89 coordinates?

Use the coordinate transformation tool above to convert Datum 73 (EPSG:4274) to ETRS89 (EPSG:4258). Enter your source coordinates and click Transform. This uses the Coordinate Frame rotation (geog2D domain) method with 1m accuracy.

How do I transform Datum 73 to ETRS89 using Proj4js?

Use proj4.defs to define both EPSG:4274 and EPSG:4258, then call proj4(source, target, [x, y]) to convert coordinates programmatically.

What is the accuracy of the Datum 73 to ETRS89 transformation?

This transformation (EPSG:1992) has an accuracy of 1m using the Coordinate Frame rotation (geog2D domain) method. Area of use: Portugal - mainland - onshore.