Convert Yacare to SIRGAS-ROU98

Convert coordinates from Yacare (EPSG:4309) to SIRGAS-ROU98 (EPSG:5381) — 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-4309-to-epsg-5381

Official EPSG transformation from Yacare to SIRGAS-ROU98

The EPSG Geodetic Parameter Dataset defines 1 transformation between Yacare (EPSG:4309) and SIRGAS-ROU98 (EPSG:5381). Its parameters, accuracy and area of use are listed below.

Yacare to SIRGAS-ROU98 (1)

EPSG:5385±1.5 m

Method:: Position Vector transformation (geog2D domain)
Area of use:: Uruguay - onshore
Scope:: Transformation of coordinates at 1m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-124.45	metre
Y-axis translation(ty)	183.74	metre
Z-axis translation(tz)	44.64	metre
X-axis rotation(rx)	-0.4384	arc-second
Y-axis rotation(ry)	0.5446	arc-second
Z-axis rotation(rz)	-0.9706	arc-second
Scale difference(ds)	-2.1365	parts per million

Derived at 11 stations during 1998 densification of Uruguay control based on SIRGAS 1995. Accuracy at stations used for derivation: 0.13 to 1.17m.

Convert EPSG:4309 to EPSG:5381 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4309", "EPSG:5381", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4309 — Yacare

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

+proj=longlat +ellps=intl +no_defs +type=crs

More about EPSG:4309 →

Target: EPSG:5381 — SIRGAS-ROU98

geographic system using latitude and longitude on an ellipsoid · Area of use: Uruguay

+proj=longlat +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs

More about EPSG:5381 →

Frequently asked questions

How accurate is converting Yacare to SIRGAS-ROU98?: The most accurate official EPSG transformation between these systems is accurate to about ±1.5 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:5381 to EPSG:4309 →