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Convert EPSG:4811 to EPSG:26911

Online coordinate converter from Voirol 1875 (Paris) (EPSG:4811) to NAD83 / UTM zone 11N (EPSG:26911). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.

Direct link to this transformation: epsgtransform.com/transform/epsg-4811-to-epsg-26911

Convert EPSG:4811 to EPSG:26911 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4811", "EPSG:26911", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4811 — Voirol 1875 (Paris)

geographic system using latitude and longitude on an ellipsoid · Area of use: Algeria - north of 32°N

+proj=longlat +ellps=clrk80ign +pm=paris +towgs84=-73,-247,227,0,0,0,0 +no_defs +type=crs
More about EPSG:4811 →

Target: EPSG:26911 — NAD83 / UTM zone 11N

projected system measured in linear units (typically metres) · Area of use: North America - 120°W to 114°W and NAD83 by country

+proj=utm +zone=11 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs
More about EPSG:26911 →

Frequently asked questions

How accurate is converting Voirol 1875 (Paris) to NAD83 / UTM zone 11N?
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.
Need the reverse? Convert EPSG:26911 to EPSG:4811 →