Convert Nahrwan 1967 to WGS 84

Convert coordinates from Nahrwan 1967 (EPSG:4270) 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-4270-to-epsg-4326

Official EPSG transformations from Nahrwan 1967 to WGS 84

The EPSG Geodetic Parameter Dataset defines 14 transformations between Nahrwan 1967 (EPSG:4270) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.

Nahrwan 1967 to WGS 84 (12)

EPSG:6999±0.15 mBest accuracy

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: UAE - Abu Dhabi - onshore
Scope:: Oil and gas exploration and production.

Parameter	Value	Unit
X-axis translation(tx)	-253.4392	metre
Y-axis translation(ty)	-148.452	metre
Z-axis translation(tz)	386.5267	metre
X-axis rotation(rx)	-0.15605	arc-second
Y-axis rotation(ry)	-0.43	arc-second
Z-axis rotation(rz)	0.1013	arc-second
Scale difference(ds)	-0.0424	parts per million

Derived in October 2013 at four control points of the ADCO CRF and evaluated at four others. Estimated horizontal accuracy of 0.14 m at the 95% confidence level.

Nahrwan 1967 to WGS 84 (4)

EPSG:1531±0.5 m

Method:: Geocentric translations (geog2D domain)
Area of use:: UAE - Abu al Bu Khoosh
Scope:: Oil and gas exploration and production.

Parameter	Value	Unit
X-axis translation(tx)	-245	metre
Y-axis translation(ty)	-153.9	metre
Z-axis translation(tz)	382.8	metre

Parameter values adopted by Total are mean of those derived by Oceonics and Geoid through ties at platform AK1 to 4 IGS stations in March 1995.

Nahrwan 1967 to WGS 84 (5)

EPSG:1536±1 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Qatar - offshore
Scope:: Oil and gas exploration and production.

Parameter	Value	Unit
X-axis translation(tx)	-250.2	metre
Y-axis translation(ty)	-153.09	metre
Z-axis translation(tz)	391.7	metre

Derived by Brown & Root in 1992 for Qatar General Petroleum Corporation North Field development. Adopted by QGPC for all offshore Qatar.

Nahrwan 1967 to WGS 84 (13)

EPSG:7002±1 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: UAE - Abu Dhabi island
Scope:: Abu Dhabi Municipality GIS.

Parameter	Value	Unit
X-axis translation(tx)	-246.1633	metre
Y-axis translation(ty)	-152.9047	metre
Z-axis translation(tz)	382.6047	metre
X-axis rotation(rx)	-0.0989	arc-second
Y-axis rotation(ry)	-0.1382	arc-second
Z-axis rotation(rz)	-0.0768	arc-second
Scale difference(ds)	0.0000021	parts per million

Nahrwan 1967 to WGS 84 (14)

EPSG:7003±1 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: UAE - Abu Dhabi - onshore west of 54°E
Scope:: Abu Dhabi Municipality GIS.

Parameter	Value	Unit
X-axis translation(tx)	-242.8907	metre
Y-axis translation(ty)	-149.0671	metre
Z-axis translation(tz)	384.416	metre
X-axis rotation(rx)	-0.19044	arc-second
Y-axis rotation(ry)	-0.24987	arc-second
Z-axis rotation(rz)	-0.13925	arc-second
Scale difference(ds)	0.0001746	parts per million

Nahrwan 1967 to WGS 84 (15)

EPSG:7004±1 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: UAE - Abu Dhabi - onshore east of 54°E
Scope:: Abu Dhabi Municipality GIS.

Parameter	Value	Unit
X-axis translation(tx)	-246.734	metre
Y-axis translation(ty)	-153.4345	metre
Z-axis translation(tz)	382.1477	metre
X-axis rotation(rx)	0.116617	arc-second
Y-axis rotation(ry)	0.165167	arc-second
Z-axis rotation(rz)	0.091327	arc-second
Scale difference(ds)	0.0000194	parts per million

Nahrwan 1967 to WGS 84 (7)

EPSG:15937±2 m

Method:: Geocentric translations (geog2D domain)
Area of use:: UAE - Abu Dhabi - offshore
Scope:: Oil and gas exploration and production.

Parameter	Value	Unit
X-axis translation(tx)	-245.8	metre
Y-axis translation(ty)	-152.2	metre
Z-axis translation(tz)	382.9	metre

Parameter values adopted by Total are mean of those derived by Oceonics and Geoid through ties at station TC58 to 4 IGS stations in March 1995.

Nahrwan 1967 to WGS 84 (11)

EPSG:6998±5 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: UAE - Abu Dhabi
Scope:: Oil and gas exploration and production.

Parameter	Value	Unit
X-axis translation(tx)	-233.4	metre
Y-axis translation(ty)	-160.7	metre
Z-axis translation(tz)	381.5	metre
X-axis rotation(rx)	0	arc-second
Y-axis rotation(ry)	0	arc-second
Z-axis rotation(rz)	-0.554	arc-second
Scale difference(ds)	0.2263	parts per million

Derived via WGS 72 but provenance uncertain. In ADMA replaces tfm code 15938. In ADCO replaced by tfm code 6999 from October 2013.

Nahrwan 1967 to WGS 84 (8)

EPSG:15938±5 m

Method:: Position Vector transformation (geog2D domain)
Area of use:: UAE - Abu Dhabi - offshore
Scope:: Oil and gas exploration and production.

Parameter	Value	Unit
X-axis translation(tx)	-225.4	metre
Y-axis translation(ty)	-158.7	metre
Z-axis translation(tz)	380.8	metre
X-axis rotation(rx)	0	arc-second
Y-axis rotation(ry)	0	arc-second
Z-axis rotation(rz)	0.814	arc-second
Scale difference(ds)	-0.38	parts per million

Derived via WGS 72BE from Transit observations at station TC58 in 1976 by BP for ADMA.

Nahrwan 1967 to WGS 84 (9)

EPSG:15952±5 m

Method:: Geocentric translations (geog2D domain)
Area of use:: UAE - Dubai - offshore
Scope:: Oil and gas exploration and production.

Parameter	Value	Unit
X-axis translation(tx)	-244.2	metre
Y-axis translation(ty)	-149.8	metre
Z-axis translation(tz)	379.3	metre

Used by DPC for Al Fateh field. Applying this transformation gives same result as Nahrwan 1967 to WGS 84 (8) (code 15938).

Nahrwan 1967 to WGS 84 (10)

EPSG:15953±5 m

Method:: Geocentric translations (geog2D domain)
Area of use:: UAE - Dubai municipality
Scope:: Municipal spatial referencing.

Parameter	Value	Unit
X-axis translation(tx)	-250.7	metre
Y-axis translation(ty)	-157.9	metre
Z-axis translation(tz)	380.4	metre

Used by Dubai Municipality before 1994.

Nahrwan 1967 to WGS 84 (2)

EPSG:1190±35 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Saudi Arabia - onshore Gulf coast
Scope:: Military survey.

Parameter	Value	Unit
X-axis translation(tx)	-243	metre
Y-axis translation(ty)	-192	metre
Z-axis translation(tz)	477	metre

Derived at 3 stations. Accuracy 20m in each axis.

Nahrwan 1967 to WGS 84 (1)

EPSG:1189±44 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Oman - Masirah Island
Scope:: Military survey.

Parameter	Value	Unit
X-axis translation(tx)	-247	metre
Y-axis translation(ty)	-148	metre
Z-axis translation(tz)	369	metre

Derived at 2 stations. Accuracy 25m in each axis. Note: Nahrwan 1967 is not used in Oman.

Nahrwan 1967 to WGS 84 (3)

EPSG:1191±44 m

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

Parameter	Value	Unit
X-axis translation(tx)	-249	metre
Y-axis translation(ty)	-156	metre
Z-axis translation(tz)	381	metre

Derived at 2 stations. Accuracy 25m in each axis.

Convert EPSG:4270 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4270", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4270 — Nahrwan 1967

geographic system using latitude and longitude on an ellipsoid · Area of use: Asia - Middle East - Qatar offshore and UAE

+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs

More about EPSG:4270 →

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 Nahrwan 1967 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:4270 →