Convert JAD69 to JAD2001

Convert coordinates from JAD69 (EPSG:4242) to JAD2001 (EPSG:4758) — 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-4242-to-epsg-4758

Official EPSG transformation from JAD69 to JAD2001

The EPSG Geodetic Parameter Dataset defines 1 transformation between JAD69 (EPSG:4242) and JAD2001 (EPSG:4758). Its parameters, accuracy and area of use are listed below.

JAD69 to JAD2001 (1)

EPSG:15926±0.5 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: Jamaica - onshore
Scope:: Transformation of coordinates at 0.4m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-33.722	metre
Y-axis translation(ty)	153.789	metre
Z-axis translation(tz)	94.959	metre
X-axis rotation(rx)	8.581	arc-second
Y-axis rotation(ry)	4.478	arc-second
Z-axis rotation(rz)	-4.54	arc-second
Scale difference(ds)	8.95	parts per million

Accuracy 0.3 to 0.5 metres. May be used as tfm to WGS 84 - see JAD69 to WGS 84 (3) (tfm code 15927).

Convert EPSG:4242 to EPSG:4758 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4242", "EPSG:4758", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4242 — JAD69

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

+proj=longlat +ellps=clrk66 +no_defs +type=crs

More about EPSG:4242 →

Target: EPSG:4758 — JAD2001

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

+proj=longlat +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs

More about EPSG:4758 →

Frequently asked questions

How accurate is converting JAD69 to JAD2001?: The most accurate official EPSG transformation between these systems is accurate to about ±0.5 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:4758 to EPSG:4242 →