gmapX and Y in cadastral records
Vietnamese cadastral records usually write X as Northing (about 1–2.6 million m) and Y as Easting (about 200–800 thousand m). The API uses x = Easting, y = Northing.
Free tools
Online VN-2000 ↔ WGS84 coordinate converter
Choose a province to use the right central meridian, enter coordinates and get results from the GMap Cloud transform API.
How to use it
- Choose a direction and a province (new or former boundaries) to set the zone.
- Enter WGS84 latitude and longitude, or VN-2000 coordinates in metres.
- Copy the result, or use the same parameters with the transform API.
Good to know
Pre-merger records use the former province’s zone
For documents prepared before 1 July 2025, choose the province under the 63-province boundaries to use the central meridian of the time.
For applications and analytics
Surveying and cadastral work must verify parameters and procedures to professional requirements.
Frequently asked questions
What is VN-2000?
VN-2000 is Vietnam’s national reference and coordinate system, adopted under Decision 83/2000/QĐ-TTg. Provincial cadastral maps use a TM-3 projection with each province’s own central meridian.
When should I use UTM instead of TM-3?
UTM 48N/49N (6° zones) is common for small-scale or national datasets; provincial TM-3 (3° zones) is used for cadastral maps and land records.
Can I convert many points?
The tool converts one point at a time. For many points, call the transform API with your own key.