Convert ITRF2000 to NAD83(CORS96)

Convert coordinates from ITRF2000 (EPSG:4919) to NAD83(CORS96) (EPSG:6781) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

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Input (x, y)

Output (x, y)

Direct link to this transformation: epsgtransform.com/transform/epsg-4919-to-epsg-6781

Official EPSG transformation from ITRF2000 to NAD83(CORS96)

The EPSG Geodetic Parameter Dataset defines 1 transformation between ITRF2000 (EPSG:4919) and NAD83(CORS96) (EPSG:6781). Its parameters, accuracy and area of use are listed below.

ITRF2000 to NAD83(CORS96) (1)

EPSG:6866±0 m

Method:: Time-dependent Coordinate Frame rotation (geocen)
Area of use:: USA - CONUS and Alaska; PRVI
Scope:: Geodesy. Defines NAD83(CORS96) from from 1st January 2002 through 6th September 2011.

Parameter	Value	Unit
X-axis translation(tx)	0.9956	metre
Y-axis translation(ty)	-1.9013	metre
Z-axis translation(tz)	-0.5215	metre
X-axis rotation(rx)	25.915	milliarc-second
Y-axis rotation(ry)	9.426	milliarc-second
Z-axis rotation(rz)	11.599	milliarc-second
Scale difference(ds)	0.62	parts per billion
rate tx	0.0007	metres per year
rate ty	-0.0007	metres per year
rate tz	0.0005	metres per year
rate rx	0.067	milliarc-seconds per year
rate ry	-0.757	milliarc-seconds per year
rate rz	-0.051	milliarc-seconds per year
rate ds	-0.18	parts per billion per year
epoch	1997	year

Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Joint derivation by Canada and US (tfm 6864) concatenated with IGS value for ITRF96>97 and IERS ITRF97>2000 transformations. See tfm 8261 for Canadian equivalent.

Convert EPSG:4919 to EPSG:6781 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4919", "EPSG:6781", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4919 — ITRF2000

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

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

More about EPSG:4919 →

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 ITRF2000 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:4919 →