Convert WGS 84 (Transit) to WGS 84 (G730)

Convert coordinates from WGS 84 (Transit) (EPSG:7815) to WGS 84 (G730) (EPSG:7656) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

From

Input (x, y)

Output (x, y)

Direct link to this transformation: epsgtransform.com/transform/epsg-7815-to-epsg-7656

Official EPSG transformation from WGS 84 (Transit) to WGS 84 (G730)

The EPSG Geodetic Parameter Dataset defines 1 transformation between WGS 84 (Transit) (EPSG:7815) and WGS 84 (G730) (EPSG:7656). Its parameters, accuracy and area of use are listed below.

WGS 84 (Transit) to WGS 84 (G730) (1)

EPSG:9960±0.7 m

Method:: Coordinate Frame rotation (geocentric domain)
Area of use:: World
Scope:: Spatial referencing.

Parameter	Value	Unit
X-axis translation(tx)	-58	millimetre
Y-axis translation(ty)	521	millimetre
Z-axis translation(tz)	239	millimetre
X-axis rotation(rx)	18.3	milliarc-second
Y-axis rotation(ry)	-0.3	milliarc-second
Z-axis rotation(rz)	7	milliarc-second
Scale difference(ds)	10.7	parts per billion

Scale difference in ppb where 1/billion = 1E-9 or nm/m. Derived through ITRF90 and ITRF91 at epoch 1990.5. Parameter values valid at other epochs including 2005.0.

Convert EPSG:7815 to EPSG:7656 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:7815", "EPSG:7656", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:7815 — WGS 84 (Transit)

geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World

+proj=geocent +ellps=WGS84 +units=m +no_defs +type=crs

More about EPSG:7815 →

Target: EPSG:7656 — WGS 84 (G730)

geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World

+proj=geocent +ellps=WGS84 +units=m +no_defs +type=crs

More about EPSG:7656 →

Frequently asked questions

How accurate is converting WGS 84 (Transit) to WGS 84 (G730)?: The most accurate official EPSG transformation between these systems is accurate to about ±0.7 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:7656 to EPSG:7815 →