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Convert ISN2004 to ISN2004 + ISH2004 height

Convert coordinates from ISN2004 (EPSG:5323) to ISN2004 + ISH2004 height (EPSG:9949) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-5323-to-epsg-9949

Official EPSG transformation from ISN2004 to ISN2004 + ISH2004 height

The EPSG Geodetic Parameter Dataset defines 1 transformation between ISN2004 (EPSG:5323) and ISN2004 + ISH2004 height (EPSG:9949). Its parameters, accuracy and area of use are listed below.

ISN2004 to ISN2004 + ISH2004 height (1)

EPSG:9957±0.05 m
Method:
Geog3D to Geog2D+GravityRelatedHeight (Gravsoft)
Area of use:
Iceland - onshore
Scope:
Reversible geoid model transformation.

Grid file: Icegeoid_ISN2004.gri

Reversible alternative to ISN2004 to ISH2004 height (1) (CT code 9956). File is also available in NOAA VDatum format (Icegeoid_ISN2004.gtx). Replaces Icegeoid_ISN93, replaced by Icegeoid_ISN2016.

Convert EPSG:5323 to EPSG:9949 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:5323", "EPSG:9949", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:5323 — ISN2004

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

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs
More about EPSG:5323 →

Target: EPSG:9949 — ISN2004 + ISH2004 height

compound horizontal + vertical reference system · Area of use: Iceland - onshore

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +vunits=m +no_defs +type=crs
More about EPSG:9949 →

Frequently asked questions

How accurate is converting ISN2004 to ISN2004 + ISH2004 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:9949 to EPSG:5323 →