Source: EPSG:8237 — NAD83(CSRS)v2
geographic system using latitude and longitude on an ellipsoid · Area of use: Canada
+proj=longlat +ellps=GRS80 +no_defs +type=crsMore about EPSG:8237 →
Convert EPSG:8237 to EPSG:4122
Online coordinate converter from NAD83(CSRS)v2 (EPSG:8237) to ATS77 (EPSG:4122). 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 ATS77 to NAD83(CSRS)v2 — the parameters are invertible.
Convert EPSG:8237 to EPSG:4122 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:8237", "EPSG:4122", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Target: EPSG:4122 — ATS77
geographic system using latitude and longitude on an ellipsoid · Area of use: Canada - Maritime Provinces
+proj=longlat +a=6378135 +rf=298.257 +no_defs +type=crsMore about EPSG:4122 →
Frequently asked questions
- How accurate is converting NAD83(CSRS)v2 to ATS77?
- 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.