Convert Pointe Noire to WGS 84

Convert coordinates from Pointe Noire (EPSG:4282) to WGS 84 (EPSG:4326) — 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-4282-to-epsg-4326

Official EPSG transformations from Pointe Noire to WGS 84

The EPSG Geodetic Parameter Dataset defines 3 transformations between Pointe Noire (EPSG:4282) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.

Pointe Noire to WGS 84 (3)

EPSG:1802±0.15 mBest accuracy

Method:: Position Vector transformation (geog2D domain)
Area of use:: Congo - coastal area and offshore
Scope:: Oil and gas exploration and production.

Parameter	Value	Unit
X-axis translation(tx)	-178.3	metre
Y-axis translation(ty)	-316.7	metre
Z-axis translation(tz)	-131.5	metre
X-axis rotation(rx)	5.278	arc-second
Y-axis rotation(ry)	6.077	arc-second
Z-axis rotation(rz)	10.979	arc-second
Scale difference(ds)	19.166	parts per million

Derived by Geoid for Elf in May 1995 using GPS and IGS data by tying 4 geodetic points to ITRF93 epoch 1995.4. Used for all offshore Congo operations.

Pointe Noire to WGS 84 (2)

EPSG:1801±4 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Congo - coastal area and offshore
Scope:: Not known.

Parameter	Value	Unit
X-axis translation(tx)	-145	metre
Y-axis translation(ty)	52.7	metre
Z-axis translation(tz)	-291.6	metre

Derived in 1994 by CGG/Topnav using DORIS system on various stations along the coastline.

Pointe Noire to WGS 84 (1)

EPSG:1200±44 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Congo
Scope:: Military survey.

Parameter	Value	Unit
X-axis translation(tx)	-148	metre
Y-axis translation(ty)	51	metre
Z-axis translation(tz)	-291	metre

Derived at 1 station. Accuracy 25m in each axis.

Convert EPSG:4282 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4282", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4282 — Pointe Noire

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

+proj=longlat +ellps=clrk80ign +towgs84=-148,51,-291,0,0,0,0 +no_defs +type=crs

More about EPSG:4282 →

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 Pointe Noire to WGS 84?: The most accurate official EPSG transformation between these systems is accurate to about ±0.15 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:4282 →