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:27571
Online coordinate converter from ITRF2014 (EPSG:7789) to NTF (Paris) / Lambert zone I (EPSG:27571). 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:27571 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:7789", "EPSG:27571", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Target: EPSG:27571 — NTF (Paris) / Lambert zone I
projected system measured in linear units (typically metres) · Area of use: France - mainland north of 48.15°N
+proj=lcc +lat_1=49.5 +lat_0=49.5 +lon_0=0 +k_0=0.999877341 +x_0=600000 +y_0=1200000 +ellps=clrk80ign +pm=paris +towgs84=-168,-60,320,0,0,0,0 +units=m +no_defs +type=crsMore about EPSG:27571 →
Frequently asked questions
- How accurate is converting ITRF2014 to NTF (Paris) / Lambert zone I?
- 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.