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Convert NAD27(76) to NAD83

Convert coordinates from NAD27(76) (EPSG:4608) to NAD83 (EPSG:4269) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4608-to-epsg-4269

Official EPSG transformation from NAD27(76) to NAD83

The EPSG Geodetic Parameter Dataset defines 1 transformation between NAD27(76) (EPSG:4608) and NAD83 (EPSG:4269). Its parameters, accuracy and area of use are listed below.

NAD27(76) to NAD83 (1)

EPSG:1463±1 m
Method:
NTv2
Area of use:
Canada - Ontario
Scope:
Not known.

Grid file: May76v20.gsb

Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27(76) (code 4608) and NAD83 (code 4269) have longitudes positive east. May be taken as approximate transformation NAD27(76) to WGS 84 - see code 1690.

Convert EPSG:4608 to EPSG:4269 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4608", "EPSG:4269", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4608 — NAD27(76)

geographic system using latitude and longitude on an ellipsoid · Area of use: Canada - Ontario

+proj=longlat +ellps=clrk66 +no_defs +type=crs
More about EPSG:4608 →

Target: EPSG:4269 — NAD83

geographic system using latitude and longitude on an ellipsoid · Area of use: North America - NAD83

+proj=longlat +datum=NAD83 +no_defs +type=crs
More about EPSG:4269 →

Frequently asked questions

How accurate is converting NAD27(76) to NAD83?
The most accurate official EPSG transformation between these systems is accurate to about ±1 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation (including the grid-shift files listed below) 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:4269 to EPSG:4608 →