Source: EPSG:10299 — RGSH2020
geographic system using latitude and longitude on an ellipsoid · Area of use: Algeria
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crsMore about EPSG:10299 →
Convert EPSG:10299 to EPSG:4307
Online coordinate converter from RGSH2020 (EPSG:10299) to Nord Sahara 1959 (EPSG:4307). 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 Nord Sahara 1959 to RGSH2020 — the parameters are invertible.
Convert EPSG:10299 to EPSG:4307 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:10299", "EPSG:4307", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Target: EPSG:4307 — Nord Sahara 1959
geographic system using latitude and longitude on an ellipsoid · Area of use: Algeria
+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-267.407,-47.068,446.357,-0.179423,5.577661,-1.27762,1.204866 +no_defs +type=crsMore about EPSG:4307 →
Frequently asked questions
- How accurate is converting RGSH2020 to Nord Sahara 1959?
- 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.