Source: EPSG:10957 — GR96(2021)
geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: Greenland
+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crsMore about EPSG:10957 →
Convert EPSG:10957 to EPSG:9988
Online coordinate converter from GR96(2021) (EPSG:10957) to ITRF2020 (EPSG:9988). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.
The EPSG dataset defines official transformation parameters for the reverse direction. See ITRF2020 to GR96(2021) — the parameters are invertible.
Convert EPSG:10957 to EPSG:9988 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:10957", "EPSG:9988", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Target: EPSG:9988 — ITRF2020
geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World
+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crsMore about EPSG:9988 →
Frequently asked questions
- How accurate is converting GR96(2021) to ITRF2020?
- Projection-only conversions are accurate to floating-point precision. If a datum shift is involved, browser-based tools use Helmert parameters which are accurate to roughly 1-5 m; for surveying-grade work apply the official grid-shift transformation 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.