Source: EPSG:7789 — ITRF2014
geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World
+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crsMore about EPSG:7789 →
Convert EPSG:7789 to EPSG:6129
Online coordinate converter from ITRF2014 (EPSG:7789) to Sister Islands National Grid 1961 (EPSG:6129). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.
Convert EPSG:7789 to EPSG:6129 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:7789", "EPSG:6129", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Target: EPSG:6129 — Sister Islands National Grid 1961
projected system measured in linear units (typically metres) · Area of use: Cayman Islands - Little Cayman and Cayman Brac
+proj=tmerc +lat_0=0 +lon_0=-81 +k=0.9996 +x_0=499999.999998 +y_0=0 +ellps=clrk66 +units=ft +no_defs +type=crsMore about EPSG:6129 →
Frequently asked questions
- How accurate is converting ITRF2014 to Sister Islands National Grid 1961?
- 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.