Coordinate transformations to HKCD depth

The EPSG Geodetic Parameter Dataset defines official transformations from 2 coordinate reference systems to HKCD depth (EPSG:5739). Each page lists the published parameters, accuracy and area of use, with a free in-browser converter.

• HKPD depth → HKCD depth±0 m
• HKPD height → HKCD depth±0 m