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Convert Lisbon 1890 (Lisbon) to WGS 84

Convert coordinates from Lisbon 1890 (Lisbon) (EPSG:4904) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4904-to-epsg-4326

Official EPSG transformations from Lisbon 1890 (Lisbon) to WGS 84

The EPSG Geodetic Parameter Dataset defines 2 transformations between Lisbon 1890 (Lisbon) (EPSG:4904) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.

Lisbon 1890 (Lisbon) to WGS 84 (2)

EPSG:8649±1 mBest accuracy
Method:
Concatenated operation
Area of use:
Portugal - mainland - onshore
Scope:
Medium accuracy applications.
  1. Lisbon 1890 (Lisbon) to Lisbon 1890 (1) (null)
  2. Lisbon 1890 to WGS 84 (2) (null)

Lisbon 1890 (Lisbon) to WGS 84 (1)

EPSG:8648±5 m
Method:
Concatenated operation
Area of use:
Portugal - mainland - onshore
Scope:
Low accuracy applications.
  1. Lisbon 1890 (Lisbon) to Lisbon 1890 (1) (null)
  2. Lisbon 1890 to WGS 84 (1) (null)

Convert EPSG:4904 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4904", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4904 — Lisbon 1890 (Lisbon)

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

+proj=longlat +ellps=bessel +pm=lisbon +no_defs +type=crs
More about EPSG:4904 →

Target: EPSG:4326 — WGS 84

geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)

+proj=longlat +datum=WGS84 +no_defs +type=crs
More about EPSG:4326 →

Frequently asked questions

How accurate is converting Lisbon 1890 (Lisbon) to WGS 84?
The most accurate official EPSG transformation between these systems is accurate to about ±1 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:4326 to EPSG:4904 →