WGS84 → BNG 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 BNG Coordinate System
BNG (British National Grid) is the official projected coordinate system for the United Kingdom, based on the OSGB36 geodetic datum and the Transverse Mercator projection optimized for the British Isles.
The British National Grid was developed by the Ordnance Survey as a unified national grid system, replacing various local projections. It uses a Transverse Mercator projection with a central meridian at 2°W, designed to minimize distortion across Great Britain.
BNG is the standard grid reference system used by the Ordnance Survey for all official UK mapping, from large-scale urban plans to small-scale road maps. It is widely used in British GIS, surveying, emergency services, and outdoor activities.
BNG provides a unified metric grid system covering all of Great Britain with easting and northing coordinates in meters, eliminating the need for UTM zone calculations.
BNG uses a customized Transverse Mercator projection centered at 2°W with a scale factor of 0.999601272, optimized to minimize distortion across the UK landmass.
BNG coordinates are expressed in meters (easting and northing), with a false origin at 400,000m easting and -100,000m northing southwest of the Isles of Scilly.
WGS84 → BNG Conversion Guide
// WGS84 → BNG (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 BNG
- Review the converted BNG 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