WGS84 → OSGB36 Converter
About WGS84 Coordinate System
WGS84 (World Geodetic System 1984) is the global standard geodetic reference system used by GPS. It defines an Earth-centered, Earth-fixed coordinate system and geodetic datum.
Developed by the U.S. Department of Defense in 1984, WGS84 has undergone several refinements (WGS84(G730), WGS84(G873), WGS84(G1150), WGS84(G1762)) to improve accuracy through GPS satellite observations.
WGS84 is the default coordinate system for GPS receivers worldwide. It is used in aviation, maritime navigation, Google Maps, OpenStreetMap, GIS applications, and scientific research.
WGS84 is the native coordinate system of the Global Positioning System (GPS), ensuring direct compatibility with all GPS receivers and satellite navigation systems worldwide.
As the most widely adopted geodetic datum, WGS84 provides a consistent global reference frame for mapping, surveying, and geospatial data exchange across international boundaries.
With continuous refinements, WGS84 achieves centimeter-level accuracy globally, making it suitable for high-precision applications like surveying, drone navigation, and scientific research.
About OSGB36 Coordinate System
OSGB36 (Ordnance Survey Great Britain 1936) is the official geodetic datum for England, Scotland, Wales, and Northern Ireland. It uses the Airy 1830 ellipsoid and is the basis for all UK Ordnance Survey mapping.
OSGB36 was established in 1936 by the Ordnance Survey as a unified national datum replacing numerous local county datums. It forms the foundation of the British National Grid (BNG) projection system used across the UK.
OSGB36 is the standard coordinate system for all official surveying, mapping, and GIS data across the United Kingdom. It is used by the Ordnance Survey, local authorities, utilities, and construction projects throughout Britain.
OSGB36 is the official geodetic datum for the United Kingdom, used by the Ordnance Survey for all national mapping products and by government agencies for land and property records.
OSGB36 uses the Airy 1830 ellipsoid (a=6377563.396m, 1/f=299.3249646), which was specifically optimized for the British Isles, providing superior accuracy for UK-based measurements compared to global ellipsoids.
OSGB36 serves as the geographic coordinate basis for the British National Grid (BNG) projection, the standard grid system for all UK mapping from large-scale urban plans to small-scale road maps.
WGS84 → OSGB36 Conversion Guide
// WGS84 → OSGB36 (Hungarian EOV projection)
// EOV uses a modified Gauss-Krüger projection
// Central meridian: 19°E
// Bessel 1841 ellipsoid: a = 6377397.155m, 1/f = 299.1528128
// The projection converts between geographic coordinates
// (latitude, longitude) and plane coordinates (X, Y in meters)
// using the Gauss-Krüger projection formulas adapted for Hungary
// EOV planar coordinates:
// Easting (X): 650,000m at central meridian
// Northing (Y): 200,000m at originThe Hungarian EOV system uses a modified Gauss-Kruger projection optimized for Hungary. It uses the Bessel 1841 ellipsoid with a central meridian at 19 degrees E.
- Enter your WGS84 coordinates in the input field (latitude, longitude, one pair per line)
- Click the Convert button to transform coordinates from WGS84 to OSGB36
- Review the converted OSGB36 coordinates in the output field
- Copy the results or save them as an XLSX file for further use
- Ensure coordinates are within valid ranges before conversion
- For batch conversions, enter one coordinate pair per line
- Verify a sample of converted coordinates on your target platform
- All conversions are performed client-side for complete data privacy