WGS84 to CGCS2000 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 CGCS2000 Coordinate System
CGCS2000 (China Geodetic Coordinate System 2000) is China's official national geodetic coordinate system, replacing Beijing 1954 and Xian 1980 systems. It is aligned with ITRF97.
CGCS2000 was officially adopted by the State Council of China in 2008 as the national standard.
CGCS2000 is mandatory for all official surveying, mapping, and GIS projects in China. It is used by government agencies, land management, urban planning, and infrastructure development.
CGCS2000 is aligned with the International Terrestrial Reference Frame 1997 (ITRF97) at epoch 2000.0.
CGCS2000 and WGS84 are essentially identical for most practical applications, with differences typically less than 1 meter.
CGCS2000 is supported by a nationwide network of continuously operating reference stations (CORS) across China.
WGS84 → CGCS2000 Conversion Guide
// WGS84 → CGCS2000
// For most practical purposes, WGS84 and CGCS2000 are equivalent
cgcsLat = wgsLat
cgcsLon = wgsLon
// At sub-meter accuracy level, transformation may be needed:
// Ellipsoid parameters differ slightly:
// WGS84: a = 6378137.0, 1/f = 298.257223563
// CGCS2000: a = 6378137.0, 1/f = 298.257222101WGS84 and CGCS2000 (China Geodetic Coordinate System 2000) are essentially identical for most practical applications. Both use the same semi-major axis (6378137m) with a negligible difference in flattening (1/f differs by 0.000001462). The difference is typically less than 1 meter.
- Enter your WGS84 coordinates in the input field
- Click Convert - the coordinates are directly compatible with CGCS2000
- Review the output coordinates (essentially identical to input)
- Use the results in any CGCS2000-compatible application
- WGS84 and CGCS2000 are practically equivalent for most GIS applications
- For high-precision surveying (>1cm), consult local transformation parameters
- No 7-parameter transformation is needed for this conversion