Source: EPSG:4258 — ETRS89
geographic system using latitude and longitude on an ellipsoid · Area of use: Europe - ETRF by country
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crsMore about EPSG:4258 →
Convert EPSG:4258 to EPSG:4133
Online coordinate converter from ETRS89 (EPSG:4258) to EST92 (EPSG:4133). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.
The EPSG dataset defines official transformation parameters for the reverse direction. See EST92 to ETRS89 — the parameters are invertible.
Convert EPSG:4258 to EPSG:4133 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4258", "EPSG:4133", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Target: EPSG:4133 — EST92
geographic system using latitude and longitude on an ellipsoid · Area of use: Estonia - onshore
+proj=longlat +ellps=GRS80 +towgs84=0.055,-0.541,-0.185,0.0183,-0.0003,-0.007,-0.014 +no_defs +type=crsMore about EPSG:4133 →
Frequently asked questions
- How accurate is converting ETRS89 to EST92?
- Projection-only conversions are accurate to floating-point precision. If a datum shift is involved, browser-based tools use Helmert parameters which are accurate to roughly 1-5 m; for surveying-grade work apply the official grid-shift 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.