Convert coordinates from ETRS89 (EPSG:4937) to ETRS89 + MSL UK & Ireland VORF08 depth (EPSG:10156) — 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 + MSL UK & Ireland VORF08 depth (EPSG:10156). Its parameters, accuracy and area of use are listed below.
Grid file: VORF-UK08_ETRF_to_MSL.vrf
Reversible alternative to ETRS89 to MSL UK & Ireland VORF08 depth (1) (code 10154). VORF08 usually delivered in tiles covering 2° by 2° or less. Transformation accuracy at 2-sigma is 0.20 metres (inshore) and 0.30 metres (offshore).
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4937", "EPSG:10156", 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: Europe - Ireland and UK offshore
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +vunits=m +no_defs +type=crsMore about EPSG:10156 →