Convert Egypt 1907 to WGS 84

Convert coordinates from Egypt 1907 (EPSG:4229) 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-4229-to-epsg-4326

About converting Egypt 1907 to WGS 84

Egypt 1907 (EPSG:4229) is Egypt's classical datum on the Helmert 1906 ellipsoid, realised from the early 20th-century triangulation along the Nile. It underlies the Egyptian belt projections — the Blue, Red and Purple Belts (EPSG:22991–22994) — used in national mapping and cadastre.

EPSG lists several transformations to WGS 84, the best around ±1–2 m, derived for different parts of the country. Egypt's oil industry and surveying community have long depended on these conversions for concession and infrastructure work.

As elsewhere, choose the operation by area of use, and keep records of which one you applied — Egyptian legacy datasets often mix sources.

Why people convert EPSG:4229 to EPSG:4326

Migrating Egyptian cadastral and belt-grid data to WGS 84
Georeferencing Survey of Egypt historical map sheets
Converting oil-concession coordinates from Egypt 1907
Integrating Nile-valley infrastructure records with GPS

Try it: Giza Pyramids, Egypt

Input (EPSG:4229): 31.1342, 29.9792

Official EPSG transformations from Egypt 1907 to WGS 84

The EPSG Geodetic Parameter Dataset defines 3 transformations between Egypt 1907 (EPSG:4229) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.

Egypt 1907 to WGS 84 (4)

EPSG:7697±1.2 mBest accuracy

Method:: Molodensky-Badekas (CF geog2D domain)
Area of use:: Egypt
Scope:: Transformation of coordinates at 1m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-127.535	metre
Y-axis translation(ty)	113.495	metre
Z-axis translation(tz)	-12.7	metre
X-axis rotation(rx)	1.603747	arc-second
Y-axis rotation(ry)	-0.153612	arc-second
Z-axis rotation(rz)	-5.364408	arc-second
Scale difference(ds)	5.33745	parts per million
Pivot X(px)	4854969.728	metre
Pivot Y(py)	2945552.013	metre
Pivot Z(pz)	2868447.61	metre

Derived at 30 stations throughout Egypt 1907 network. Accuracy determined at 15 stations 0.7m in each axis. Unified transformation for whole country.

Egypt 1907 to WGS 84 (2)

EPSG:8537±6 m

Method:: Concatenated operation
Area of use:: Egypt
Scope:: Oil and gas exploration and production.

Egypt 1907 to WGS 72 (1) (null)
WGS 72 to WGS 84 (1) (null)

Used by Shell. May be implemented as a single transformation using position vector 7-parameter geocentric transformation method with parameter values dX=-121.8m dY=+98.1m dZ=-10.7m rX=rY=0 sec rZ=+0.554 sec dS=+0.2263 ppm.

Egypt 1907 to WGS 84 (1)

EPSG:1148±11 m

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

Parameter	Value	Unit
X-axis translation(tx)	-130	metre
Y-axis translation(ty)	110	metre
Z-axis translation(tz)	-13	metre

Derived at 14 stations. Accuracy 3m, 6m and 8m in X, Y and Z axes.

Convert EPSG:4229 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4229", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4229 — Egypt 1907

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

+proj=longlat +ellps=helmert +towgs84=-130,110,-13,0,0,0,0 +no_defs +type=crs

More about EPSG:4229 →

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

What are the Blue, Red and Purple Belts?: Egypt's three Transverse Mercator zones on the Egypt 1907 datum, covering the country from east to west. Converting belt coordinates to WGS 84 involves unprojecting plus this datum shift.
How accurate is Egypt 1907 to WGS 84?: The better EPSG operations are fitted to about ±1–2 m within their stated areas. Older single-station fits are coarser, so check the accuracy listed on each operation.
How accurate is converting Egypt 1907 to WGS 84?: The most accurate official EPSG transformation between these systems is accurate to about ±1.2 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:4326 to EPSG:4229 →