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Convert GR96 to GR96 + GLMSL(2023) depth

Convert coordinates from GR96 (EPSG:4909) to GR96 + GLMSL(2023) depth (EPSG:10651) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4909-to-epsg-10651

Official EPSG transformation from GR96 to GR96 + GLMSL(2023) depth

The EPSG Geodetic Parameter Dataset defines 1 transformation between GR96 (EPSG:4909) and GR96 + GLMSL(2023) depth (EPSG:10651). Its parameters, accuracy and area of use are listed below.

GR96 to GR96 + GLMSL(2023) depth (1)

EPSG:10654±0.05 m
Method:
Geog3D to Geog2D+Depth (gtg)
Area of use:
Greenland - offshore
Scope:
Reversible hydroid model transformation.

Grid file: glmsl_2023.tif

Reversible alternative to GR96 to GLMSL(2023) depth (1) (code 10653).

Convert EPSG:4909 to EPSG:10651 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4909", "EPSG:10651", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4909 — GR96

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

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs
More about EPSG:4909 →

Target: EPSG:10651 — GR96 + GLMSL(2023) depth

compound horizontal + vertical reference system · Area of use: Greenland - offshore

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +geoidgrids=dk_sdfi_glmsl_2023.tif +geoid_crs=WGS84 +vunits=m +no_defs +type=crs
More about EPSG:10651 →

Frequently asked questions

How accurate is converting GR96 to GR96 + GLMSL(2023) depth?
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:10651 to EPSG:4909 →