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Convert SIRGAS 2000 to SIRGAS-CON SIR17P01

Convert coordinates from SIRGAS 2000 (EPSG:4674) to SIRGAS-CON SIR17P01 (EPSG:8987) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4674-to-epsg-8987

Official EPSG transformation from SIRGAS 2000 to SIRGAS-CON SIR17P01

The EPSG Geodetic Parameter Dataset defines 1 transformation between SIRGAS 2000 (EPSG:4674) and SIRGAS-CON SIR17P01 (EPSG:8987). Its parameters, accuracy and area of use are listed below.

SIRGAS 2000 to SIRGAS-CON SIR17P01 (1)

EPSG:9980±0.02 m
Method:
NTv2
Area of use:
Latin America - Central America and South America
Scope:
Transformation of coordinates at 0.02m level of accuracy.

Grid file: SIRGAS2000-to-SIRGAS-CONSIR17P01.gsb

Derived at 79 stations at epoch 2015.00. Accuracy deteriorates with time due to intra-plate seismic deformation.

Convert EPSG:4674 to EPSG:8987 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4674", "EPSG:8987", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4674 — SIRGAS 2000

geographic system using latitude and longitude on an ellipsoid · Area of use: Latin America - SIRGAS 2000 by country

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs
More about EPSG:4674 →

Target: EPSG:8987 — SIRGAS-CON SIR17P01

geographic system using latitude and longitude on an ellipsoid · Area of use: Latin America - Central America and South America

+proj=longlat +ellps=GRS80 +no_defs +type=crs
More about EPSG:8987 →

Frequently asked questions

How accurate is converting SIRGAS 2000 to SIRGAS-CON SIR17P01?
The most accurate official EPSG transformation between these systems is accurate to about ±0.02 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation (including the grid-shift files listed below) 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:8987 to EPSG:4674 →