WGS84 to KGD2002 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 KGD2002 Coordinate System
KGD2002 (Korean Geodetic Datum 2002) is the official geodetic datum for South Korea, aligned with ITRF2000 at epoch 2002.0. It uses the GRS80 ellipsoid and is functionally equivalent to WGS84 for most applications.
KGD2002 was adopted in 2002, replacing the older Tokyo Datum that was historically used on the Korean peninsula. It provides a modern, GPS-compatible reference system aligned with the International Terrestrial Reference Frame.
KGD2002 is the standard coordinate system for all South Korean government mapping, land surveys, and GIS applications. It is maintained by the National Geographic Information Institute (NGII).
KGD2002 is the official geodetic datum for South Korea, used for all national mapping, cadastral surveys, and GIS data.
KGD2002 is aligned with ITRF2000 at epoch 2002.0, providing compatibility with modern GPS/GNSS positioning and global geospatial applications.
WGS84 to KGD2002 Conversion Guide
// WGS84 → KGD2002 (effectively identical)
// Both systems use essentially the same reference ellipsoid
// No transformation is needed for most practical applications
// At sub-meter accuracy level:
// KGD2002 uses the same GRS80 ellipsoid as WGS84
// Difference typically < 1 meter
WGS84 and KGD2002 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 KGD2002
- Review the converted KGD2002 coordinates in the output field
- Copy the results or save them as an XLSX file for further use
- No transformation is needed - WGS84 and KGD2002 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