Geodetic Survey Section

Web-based Transformation Tool

Version 3.4.3

	Geodetic Survey Section
	Lands Department

Coordinates Transformation API
This is a service to conduct coordinates transformation using HTTP request. For more details, please refer to manual

Note:
1. WGS84 (ITRF96) reference frame refers to epoch 1998:121
2. Vertical Datum transformation is only available between WGS84 (ITRF96) Geographic Coordinates and HK1980 Grid Coordinates

Please complete the following selection.

Transform From:

Transform To:

Datum (Vertical)

Data Input

Microsoft Internet Explorer does not support File Upload option.

User Selection

Transform From:
Transform To:

Note:
Vertical Transformation Geoid model refers to HKGEOID2016_SMO

Note:
Ellipsoidal Height is set to zero for computation

User Keyin Table

Point ID	Keyin	Keyin	Keyin
Input	Input	Input	Input
Input	Input	Input	Input
Input	Input	Input	Input
Input	Input	Input	Input
Input	Input	Input	Input
Input	Input	Input	Input
Input	Input	Input	Input
Input	Input	Input	Input
Input	Input	Input	Input
Input	Input	Input	Input

Step 1: Select File

Note:
1. Your submitted file MUST contains column
.
2. Name of column is case insensitive.
3. The order of columns is insignificant.
4. Vertical Transformation Geoid model refers to HKGEOID2016_SMO

Error:
Please check the header of your submitted file.

Error:
The size of submitted file must be less than 1. MB.

Error:
Unknown error. Please contact geodetic@landsd.gov.hk for support.

Select file

Sample File

Step 2: Computation

Step 3: File Download

Processing... Please Wait.

Only the first 10000 records were computed.

Last Revision Date: 2023-11-27