BJ2000 to CGCS2000 Converter
About BJ2000 Coordinate System
BJ2000 is China's modern geodetic reference system based on CGCS2000, established to replace BJ54.
BJ2000 was developed alongside CGCS2000 as part of China's geodetic infrastructure modernization.
BJ2000 is used for surveying, GIS, engineering projects, and scientific research in China.
BJ2000 uses the same reference ellipsoid as CGCS2000.
Converting between BJ2000 and WGS84 requires regional 7-parameter values.
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.
BJ2000 → CGCS2000 Conversion Guide
// BJ2000 → CGCS2000 (via WGS84 intermediate)
// Most non-WGS84 conversions use a two-step process:
// Step 1: BJ2000 → WGS84 (using reverse transformation)
// Step 2: WGS84 → CGCS2000 (using forward transformation)
// This ensures maximum accuracy by routing through
// the well-defined global WGS84 reference system
// rather than attempting a direct transformation{{from}} to {{to}} is performed via a two-step transformation through WGS84 as an intermediate reference system, ensuring maximum accuracy.
- Enter your BJ2000 coordinates in the input field (latitude, longitude, one pair per line)
- Enter the appropriate 7-parameter Helmert values (dx, dy, dz, rx, ry, rz, s) for your region
- Click the Convert button to transform coordinates from BJ2000 to CGCS2000
- Review the converted CGCS2000 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
- 7-parameter values are region-specific; obtain them from local surveying authorities
- Verify a sample of converted coordinates on your target platform
- All conversions are performed client-side for complete data privacy