Convert Azores Central 1995 to PTRA08

Convert coordinates from Azores Central 1995 (EPSG:4665) to PTRA08 (EPSG:5013) — 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-4665-to-epsg-5013

Official EPSG transformations from Azores Central 1995 to PTRA08

The EPSG Geodetic Parameter Dataset defines 6 transformations between Azores Central 1995 (EPSG:4665) and PTRA08 (EPSG:5013). Each applies to a specific area — pick the one whose area of use covers your data.

Azores Central 1995 to PTRA08 (3)

EPSG:5029±0.2 mBest accuracy

Method:: Geocentric translations (geog2D domain)
Area of use:: Portugal - Azores C - Graciosa onshore
Scope:: Transformation of coordinates at 0.2m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-105.359	metre
Y-axis translation(ty)	165.804	metre
Z-axis translation(tz)	-37.05	metre

Derived at 11 points in May 2009. Residuals at 15 test points within 0.1m horizontal and 0.2m vertical. Info source also provides a Position Vector tfm of similar accuracy.

Azores Central 1995 to PTRA08 (2)

EPSG:5028±0.5 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Portugal - Azores C - Faial onshore
Scope:: Transformation of coordinates at 0.5m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-105.377	metre
Y-axis translation(ty)	165.769	metre
Z-axis translation(tz)	-36.965	metre

Derived at 24 points in May 2009. Residuals at 37 test points within 0.1m horizontal and 0.3m vertical. Info source also provides a Position Vector tfm of similar accuracy.

Azores Central 1995 to PTRA08 (6)

EPSG:5032±0.6 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Portugal - Azores C - Terceira onshore
Scope:: Transformation of coordinates at 0.6m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-106.235	metre
Y-axis translation(ty)	166.236	metre
Z-axis translation(tz)	-37.768	metre

Derived at 26 points in May 2009. Residuals at 34 test points within 0.1m horizontal and 0.6m vertical. Info source also provides a Position Vector tfm of similar accuracy.

Azores Central 1995 to PTRA08 (5)

EPSG:5031±0.8 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Portugal - Azores C - S Jorge onshore
Scope:: Transformation of coordinates at 0.8m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-105.756	metre
Y-axis translation(ty)	165.972	metre
Z-axis translation(tz)	-37.313	metre

Derived at 17 points in May 2009. Residuals at 60 test points within 0.1m horizontal and 0.8m vertical. Info source also provides a Position Vector tfm of similar accuracy.

Azores Central 1995 to PTRA08 (4)

EPSG:5030±1 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Portugal - Azores C - Pico onshore
Scope:: Transformation of coordinates at 1m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-105.531	metre
Y-axis translation(ty)	166.39	metre
Z-axis translation(tz)	-37.326	metre

Derived at 34 points in May 2009. Residuals at 38 test points within 0.2m horizontal and 1m vertical. Info source also provides a Position Vector tfm of similar accuracy.

Azores Central 1995 to PTRA08 (1)

EPSG:5027±2 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Portugal - Azores C - onshore
Scope:: Transformation of coordinates at 2m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-105.679	metre
Y-axis translation(ty)	166.1	metre
Z-axis translation(tz)	-37.322	metre

Derived at 112 points in May 2009. Residuals at 184 test points within 0.5m horizontal and 1m vertical. Info source also provides a Position Vector tfm of similar accuracy. See codes 5028-32 for preferred tfms for individual islands.

Convert EPSG:4665 to EPSG:5013 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4665", "EPSG:5013", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4665 — Azores Central 1995

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

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

More about EPSG:4665 →

Target: EPSG:5013 — PTRA08

geographic system using latitude and longitude on an ellipsoid · Area of use: Portugal - Azores and Madeira

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs

More about EPSG:5013 →

Frequently asked questions

How accurate is converting Azores Central 1995 to PTRA08?: The most accurate official EPSG transformation between these systems is accurate to about ±0.2 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:5013 to EPSG:4665 →