Skip to content
transform

Convert NAD27 to ITRF2014

Convert coordinates from NAD27 (EPSG:4267) to ITRF2014 (EPSG:7789) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4267-to-epsg-7789

Official EPSG transformations from NAD27 to ITRF2014

The EPSG Geodetic Parameter Dataset defines 2 transformations between NAD27 (EPSG:4267) and ITRF2014 (EPSG:7789). Each applies to a specific area — pick the one whose area of use covers your data.

NAD27 to ITRF2014 (2)

EPSG:9104±0.2 mBest accuracy
Method:
Concatenated operation
Area of use:
USA - GoM OCS
Scope:
Oil and gas exploration and production.
  1. NAD27 to NAD83 (7) (null)
  2. NAD83 to NAD83(HARN) (47) (null)
  3. NAD83(HARN) to NAD83(FBN) (1) (null)
  4. NAD83(FBN) to NAD83(NSRS2007) (1) (null)
  5. NAD83(NSRS2007) to NAD83(2011) (1) (null)
  6. ITRF2008 to NAD83(2011) (1) (null)
  7. ITRF2008 to ITRF2014 (1) (null)

For use in new operations - see CT code 9103 for alternative for legacy data. Note that steps 1 to 5 are documented in the geog2D domain, steps 6 and 7 in the geocentric domain. Steps 6 and 7 may be implemented in one operation using CT code 8970.

NAD27 to ITRF2014 (1)

EPSG:9103±1.5 m
Method:
Concatenated operation
Area of use:
USA - GoM OCS
Scope:
Oil and gas exploration and production.
  1. NAD27 to NAD83 (1) (null)
  2. NAD83 to NAD83(2011) (1) (null)
  3. ITRF2008 to NAD83(2011) (1) (null)
  4. ITRF2008 to ITRF2014 (1) (null)

For use with legacy data - see CT code 9104 for alternative for new areas. Note that steps 1 and 2 are documented in the geog2D domain, steps 3 and 4 in the geocentric domain. Steps 3 and 4 may be implemented in one operation using CT code 8970.

Convert EPSG:4267 to EPSG:7789 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4267", "EPSG:7789", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4267 — NAD27

geographic system using latitude and longitude on an ellipsoid · Area of use: North America - NAD27

+proj=longlat +datum=NAD27 +no_defs +type=crs
More about EPSG:4267 →

Target: EPSG:7789 — ITRF2014

geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World

+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crs
More about EPSG:7789 →

Frequently asked questions

How accurate is converting NAD27 to ITRF2014?
The most accurate official EPSG transformation between these systems is accurate to about ±0.2 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official 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:7789 to EPSG:4267 →