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Convert Lao 1993 to WGS 84

Convert coordinates from Lao 1993 (EPSG:4677) 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-4677-to-epsg-4326

Official EPSG transformation from Lao 1993 to WGS 84

The EPSG Geodetic Parameter Dataset defines 1 transformation between Lao 1993 (EPSG:4677) and WGS 84 (EPSG:4326). Its parameters, accuracy and area of use are listed below.

Lao 1993 to WGS 84 (1)

EPSG:8652±6 m
Method:
Concatenated operation
Area of use:
Laos
Scope:
Transformation of coordinates at 5m level of accuracy.
  1. Lao 1993 to Lao 1997 (1) (null)
  2. Lao 1997 to WGS 84 (1) (null)

Can be implemented as a geocentric translation tfm with param. values dX = 43.933m, dY = -129.593m, dZ= -39.331m.

Convert EPSG:4677 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4677", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4677 — Lao 1993

geographic system using latitude and longitude on an ellipsoid · Area of use: Laos

+proj=longlat +ellps=krass +no_defs +type=crs
More about EPSG:4677 →

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 Lao 1993 to WGS 84?
The most accurate official EPSG transformation between these systems is accurate to about ±6 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:4326 to EPSG:4677 →