EPSG:2326 Hong Kong 1980 Grid System
Projected system (Transverse Mercator) in use: China - Hong Kong. The full definition below, and conversion in one click.
| Code | EPSG:2326 |
|---|---|
| Name | Hong Kong 1980 Grid System |
| Type | Projected system — Transverse Mercator |
| Area of use |
China - Hong Kong China - Hong Kong - onshore and offshore. |
| Bounds | W 113,76° · S 22,13° · E 114,51° · N 22,58° |
| Countries | China |
| Datum | Hong Kong 1980 |
| Ellipsoid | International 1924 a = 6378388 m · 1/f = 297 |
| Base geographic system | EPSG:4611 — Hong Kong 1980 |
| Unit | metre (N north, E east) |
| Transformation to WGS 84 | Hong Kong 1980 to WGS 84 (1) (EPSG:1825) — accuracy 1 m |
| Scope | Cadastre, engineering survey, topographic mapping (large scale). |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 22.312133333333335 | degree |
| Longitude of natural origin | 114.17855555555556 | degree |
| Scale factor at natural origin | 1 | unity |
| False easting | 836694.05 | metre |
| False northing | 819069.8 | metre |
proj4 definition
+proj=tmerc +lat_0=22.3121333333333 +lon_0=114.178555555556 +k=1 +x_0=836694.05 +y_0=819069.8 +ellps=intl +units=m +towgs84=-162.619,-276.959,-161.764,0.067753,-2.243648,-1.158828,-1.094246 +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:2326.
WKT (ESRI format, the .prj content)
PROJCS["Hong_Kong_1980_Grid",GEOGCS["GCS_Hong_Kong_1980",DATUM["D_Hong_Kong_1980",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",836694.05],PARAMETER["False_Northing",819069.8],PARAMETER["Central_Meridian",114.178555555556],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",22.3121333333333],UNIT["Meter",1.0]]Other systems — China
- EPSG:2327Xian 1980 / Gauss-Kruger zone 13
- EPSG:2328Xian 1980 / Gauss-Kruger zone 14
- EPSG:2329Xian 1980 / Gauss-Kruger zone 15
- EPSG:2330Xian 1980 / Gauss-Kruger zone 16
- EPSG:2331Xian 1980 / Gauss-Kruger zone 17
- EPSG:2332Xian 1980 / Gauss-Kruger zone 18
- EPSG:2333Xian 1980 / Gauss-Kruger zone 19
- EPSG:2334Xian 1980 / Gauss-Kruger zone 20
- EPSG:2335Xian 1980 / Gauss-Kruger zone 21
- EPSG:2336Xian 1980 / Gauss-Kruger zone 22
- EPSG:2337Xian 1980 / Gauss-Kruger zone 23
- EPSG:2338Xian 1980 / Gauss-Kruger CM 75E
- EPSG:2339Xian 1980 / Gauss-Kruger CM 81E
- EPSG:2340Xian 1980 / Gauss-Kruger CM 87E
- EPSG:2341Xian 1980 / Gauss-Kruger CM 93E
- EPSG:2342Xian 1980 / Gauss-Kruger CM 99E
- EPSG:2343Xian 1980 / Gauss-Kruger CM 105E
- EPSG:2344Xian 1980 / Gauss-Kruger CM 111E
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.