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Convert Guam 1963 to WGS 84

Convert coordinates from Guam 1963 (EPSG:4675) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4675-to-epsg-4326

Official EPSG transformations from Guam 1963 to WGS 84

The EPSG Geodetic Parameter Dataset defines 2 transformations between Guam 1963 (EPSG:4675) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.

Guam 1963 to WGS 84 (2)

EPSG:1069±5 mBest accuracy
Method:
NADCON
Area of use:
Guam - onshore
Scope:
(null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

Grid files: guhpgn.lasguhpgn.los

Parameter files are from Guam 1963 to NAD83(HARN) (1) (code 1068), but for many purposes NAD83(HARN) can be considered to be coincident with WGS 84 within the accuracy of the transformation.

Guam 1963 to WGS 84 (1)

EPSG:1070±6 m
Method:
Geocentric translations (geog2D domain)
Area of use:
Guam - onshore
Scope:
Military survey.
ParameterValueUnit
X-axis translation(tx)-100metre
Y-axis translation(ty)-248metre
Z-axis translation(tz)259metre

Derived at 5 stations. Accuracy 3m in each axis.

Convert EPSG:4675 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4675", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4675 — Guam 1963

geographic system using latitude and longitude on an ellipsoid · Area of use: Pacific - Guam and NMI - onshore

+proj=longlat +ellps=clrk66 +no_defs +type=crs
More about EPSG:4675 →

Target: EPSG:4326 — WGS 84

geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)

+proj=longlat +datum=WGS84 +no_defs +type=crs
More about EPSG:4326 →

Frequently asked questions

How accurate is converting Guam 1963 to WGS 84?
The most accurate official EPSG transformation between these systems is accurate to about ±5 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:4326 to EPSG:4675 →