WGS84 to RGF93 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 RGF93 Coordinate System
RGF93 (Reseau Geodesique Francais 1993) is the official geodetic datum for metropolitan France, aligned with ETRS89 and equivalent to WGS84. It uses the GRS80 ellipsoid and is the basis for the Lambert-93 projection system.
RGF93 was established in 1993 by IGN to replace the older NTF system. It aligns France with ETRS89, adopting the GRS80 ellipsoid for modern GPS-compatible surveying.
RGF93 is the mandatory geodetic reference for all French government mapping and GIS applications. Lambert-93 projection based on RGF93 is the official projection system.
RGF93 is the official geodetic datum for France, used for all government mapping and GIS data.
RGF93 is aligned with ETRS89, making it compatible with European-wide spatial data infrastructure.
WGS84 to RGF93 Conversion Guide
// WGS84 → RGF93 (effectively identical)
// Both systems use essentially the same reference ellipsoid
// No transformation is needed for most practical applications
// At sub-meter accuracy level:
// RGF93 uses the same GRS80 ellipsoid as WGS84
// Difference typically < 1 meter
WGS84 and RGF93 are essentially identical for most practical applications. Both use the GRS80 ellipsoid (a=6378137m) with a negligible flattening difference. The coordinate difference is typically less than 1 meter.
- Enter your WGS84 coordinates in the input field (latitude, longitude, one pair per line)
- Click the Convert button to transform coordinates from WGS84 to RGF93
- Review the converted RGF93 coordinates in the output field
- Copy the results or save them as an XLSX file for further use
- No transformation is needed - WGS84 and RGF93 are practically equivalent for most applications
- 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