EPSG:CODE

OSGB36 to WGS 84 (6)

EPSG:4277 → EPSG:4326

Coordinate Reference Systems

Source CRS
EPSG:4277
OSGB36
Geographic 2D
Target CRS
EPSG:4326
WGS 84
Geographic 2D

Transform Coordinates

Remarks

Commonly referred to as the "OSGB Petroleum transformation". For a more accurate transformation see ETRS89 to OSGB36 / British National Grid (3) (code 7953).

Frequently Asked Questions

How do I convert OSGB36 to WGS 84 coordinates?

Use the coordinate transformation tool above to convert OSGB36 (EPSG:4277) to WGS 84 (EPSG:4326). Enter your source coordinates and click Transform. This uses the Position Vector transformation (geog2D domain) method with 2m accuracy.

How do I transform OSGB36 to WGS 84 using Proj4js?

Use proj4.defs to define both EPSG:4277 and EPSG:4326, then call proj4(source, target, [x, y]) to convert coordinates programmatically.

What is the accuracy of the OSGB36 to WGS 84 transformation?

This transformation (EPSG:1314) has an accuracy of 2m using the Position Vector transformation (geog2D domain) method. Area of use: UK - Great Britain onshore and nearshore; Isle of Man.