Source: EPSG:9783 — RGF93 v2b (lon-lat)
geographic system using latitude, longitude and ellipsoidal height · Area of use: France
+proj=longlat +ellps=GRS80 +no_defs +type=crsMore about EPSG:9783 →
Convert EPSG:9783 to EPSG:4322
Online coordinate converter from RGF93 v2b (lon-lat) (EPSG:9783) to WGS 72 (EPSG:4322). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.
Convert EPSG:9783 to EPSG:4322 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:9783", "EPSG:4322", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Target: EPSG:4322 — WGS 72
geographic system using latitude and longitude on an ellipsoid · Area of use: World
+proj=longlat +ellps=WGS72 +no_defs +type=crsMore about EPSG:4322 →
Frequently asked questions
- How accurate is converting RGF93 v2b (lon-lat) to WGS 72?
- 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.