Convert coordinates from ETRS89 (EPSG:4937) to ETRS89 + DHHN2016 height (EPSG:9924) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 1 transformation between ETRS89 (EPSG:4937) and ETRS89 + DHHN2016 height (EPSG:9924). Its parameters, accuracy and area of use are listed below.
Grid file: GCG2016.txt
Reversible alternative to ETRS89 to DHHN2016 height (1) (code 9925). Geoid model accuracy approx. 1 cm in the lowlands, approx. 2 cm in the high mountains and 2 - 6 cm offshore when applied to ETRS89/DREF91/2016 but no better than 0.1m when ETRS89 used.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4937", "EPSG:9924", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)geographic system using latitude, longitude and ellipsoidal height · Area of use: Europe - ETRF by country
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crsMore about EPSG:4937 →
compound horizontal + vertical reference system · Area of use: Germany - onshore
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +geoidgrids=de_bkg_gcg2016.tif +geoid_crs=WGS84 +vunits=m +no_defs +type=crsMore about EPSG:9924 →