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Convert NAD83(CSRS)v3 to NAD83(CSRS)v3 + CGVD2013a(1997) height

Convert coordinates from NAD83(CSRS)v3 (EPSG:8239) to NAD83(CSRS)v3 + CGVD2013a(1997) height (EPSG:20038) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-8239-to-epsg-20038

Official EPSG transformation from NAD83(CSRS)v3 to NAD83(CSRS)v3 + CGVD2013a(1997) height

The EPSG Geodetic Parameter Dataset defines 1 transformation between NAD83(CSRS)v3 (EPSG:8239) and NAD83(CSRS)v3 + CGVD2013a(1997) height (EPSG:20038). Its parameters, accuracy and area of use are listed below.

NAD83(CSRS)v3 to NAD83(CSRS)v3 + CGVD2013a(1997) height (1)

EPSG:10129±0.05 m
Method:
Geog3D to Geog2D+GravityRelatedHeight (NRCan byn)
Area of use:
Canada
Scope:
Reversible geoid model transformation.

Grid file: CGG2013an83.byn

Reversible alternative to NAD83(CSRS)v3 to CGVD2013a(1997) height (1) (code 10111).

Convert EPSG:8239 to EPSG:20038 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:8239", "EPSG:20038", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:8239 — NAD83(CSRS)v3

geographic system using latitude, longitude and ellipsoidal height · Area of use: Canada

+proj=longlat +ellps=GRS80 +no_defs +type=crs
More about EPSG:8239 →

Target: EPSG:20038 — NAD83(CSRS)v3 + CGVD2013a(1997) height

compound horizontal + vertical reference system · Area of use: Canada

+proj=longlat +ellps=GRS80 +geoidgrids=ca_nrc_CGG2013an83.tif +geoid_crs=WGS84 +vunits=m +no_defs +type=crs
More about EPSG:20038 →

Frequently asked questions

How accurate is converting NAD83(CSRS)v3 to NAD83(CSRS)v3 + CGVD2013a(1997) height?
The most accurate official EPSG transformation between these systems is accurate to about ±0.05 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation (including the grid-shift files listed below) 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:20038 to EPSG:8239 →