EPSG:3407 Hong Kong 1963 Grid System
Projected system (Cassini-Soldner) in use: China - Hong Kong. The full definition below, and conversion in one click.
EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.
| Code | EPSG:3407 |
|---|---|
| Name | Hong Kong 1963 Grid System |
| Type | Projected system — Cassini-Soldner |
| 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 1963 |
| Ellipsoid | Clarke 1858 a = 6378293.645208759 m · 1/f = 294.260676369 |
| Base geographic system | EPSG:4738 — Hong Kong 1963 |
| Unit | Clarke's foot (N north, E east) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| 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 |
| False easting | 132033.92 | Clarke's foot |
| False northing | 62565.96 | Clarke's foot |
proj4 definition
+proj=cass +lat_0=22.3121333333333 +lon_0=114.178555555556 +x_0=40243.5777560424 +y_0=19069.9335151258 +a=6378293.64520876 +b=6356617.98767984 +to_meter=0.3047972654 +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:3407.
WKT (ESRI format, the .prj content)
PROJCS["Hong_Kong_1963_Grid_System",GEOGCS["GCS_Hong_Kong_1963",DATUM["D_Hong_Kong_1963",SPHEROID["Clarke_1858",6378293.64520876,294.260676369261]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Cassini"],PARAMETER["False_Easting",132033.92],PARAMETER["False_Northing",62565.96],PARAMETER["Central_Meridian",114.178555555556],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",22.3121333333333],UNIT["Clarke's foot",0.3047972654]]Other systems — China
- EPSG:2427Beijing 1954 / 3-degree Gauss-Kruger CM 90E
- EPSG:2428Beijing 1954 / 3-degree Gauss-Kruger CM 93E
- EPSG:2429Beijing 1954 / 3-degree Gauss-Kruger CM 96E
- EPSG:2430Beijing 1954 / 3-degree Gauss-Kruger CM 99E
- EPSG:2431Beijing 1954 / 3-degree Gauss-Kruger CM 102E
- EPSG:2432Beijing 1954 / 3-degree Gauss-Kruger CM 105E
- EPSG:2433Beijing 1954 / 3-degree Gauss-Kruger CM 108E
- EPSG:2434Beijing 1954 / 3-degree Gauss-Kruger CM 111E
- EPSG:2435Beijing 1954 / 3-degree Gauss-Kruger CM 114E
- EPSG:2436Beijing 1954 / 3-degree Gauss-Kruger CM 117E
- EPSG:2437Beijing 1954 / 3-degree Gauss-Kruger CM 120E
- EPSG:2438Beijing 1954 / 3-degree Gauss-Kruger CM 123E
- EPSG:2439Beijing 1954 / 3-degree Gauss-Kruger CM 126E
- EPSG:2440Beijing 1954 / 3-degree Gauss-Kruger CM 129E
- EPSG:2441Beijing 1954 / 3-degree Gauss-Kruger CM 132E
- EPSG:2442Beijing 1954 / 3-degree Gauss-Kruger CM 135E
- EPSG:3415WGS 72BE / South China Sea Lambert
- EPSG:4214Beijing 1954
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.