Convert NAD83(CSRS)v4 to NAD83(CORS96)

Convert coordinates from NAD83(CSRS)v4 (EPSG:8242) to NAD83(CORS96) (EPSG:6781) — 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-8242-to-epsg-6781

Official EPSG transformation from NAD83(CSRS)v4 to NAD83(CORS96)

The EPSG Geodetic Parameter Dataset defines 1 transformation between NAD83(CSRS)v4 (EPSG:8242) and NAD83(CORS96) (EPSG:6781). Its parameters, accuracy and area of use are listed below.

NAD83(CSRS)v4 to NAD83(CORS96) (1)

EPSG:9128±0 m

Method:: Position Vector transformation (geocentric domain)
Area of use:: North America - Canada, US (Conus+AK), PRVI
Scope:: Geodesy.

Parameter	Value	Unit
X-axis translation(tx)	0	metre
Y-axis translation(ty)	0	metre
Z-axis translation(tz)	0	metre
X-axis rotation(rx)	0	milliarc-second
Y-axis rotation(ry)	0	milliarc-second
Z-axis rotation(rz)	0	milliarc-second
Scale difference(ds)	0	parts per billion

Scale difference in ppb where 1/billion = 1E-9 or nm/m. Source and target CRSs defined from ITRF2000 by common transformations (codes 6866 and 8261). 6866 defines CORS96 from 1st January 2002 to 6th September 2011.

Convert EPSG:8242 to EPSG:6781 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:8242", "EPSG:6781", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:8242 — NAD83(CSRS)v4

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

+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crs

More about EPSG:8242 →

Target: EPSG:6781 — NAD83(CORS96)

geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: USA - CONUS and Alaska; PRVI

+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crs

More about EPSG:6781 →

Frequently asked questions

How accurate is converting NAD83(CSRS)v4 to NAD83(CORS96)?: The most accurate official EPSG transformation between these systems is accurate to about ±0 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:6781 to EPSG:8242 →