Clean up customer addresses
Suggest addresses as people type and update old records after the merger.
Each guide solves one concrete task, with API calls tested against the demo key. New here? Start with “Your first five minutes”.
Start here
Use the demo key to find a place, read the GeoJSON result and show it on a Vietnam map with MapLibre, in a few lines of code.

Run in your browser, no sign-up needed.
Convert former Vietnamese addresses to the new 2025 formatEnter an address, place name or coordinate to see its address under the 63-province (three-level) and 34-province (two-level) models, with WGS84 and VN-2000 coordinates.Open the tool
Online VN-2000 ↔ WGS84 coordinate converterConvert VN-2000 coordinates to WGS84 or back using each province’s TM-3 zone (34 or 63 provinces) or UTM. Free and runs in your browser.Open the tool
Vietnamese addresses after the merger: matching old and new addresses with an APISince 1 July 2025 Vietnam has 34 provinces and no district level. How to use coordinates and reverse geocoding to match 63-province and 34-province addresses.
Build an address field with suggestions for your checkoutJavaScript for an address field that suggests as people type: wait for a pause, cancel stale requests, and store the label and coordinates with the order.
Show a map of Vietnam with MapLibre GL JSEmbed the GMap basemap in a web page with MapLibre GL JS, add markers, switch between light and dark with the system theme, and keep attribution.
Pick the nearest warehouse with a time–distance matrixOne API call returns travel time and distance from several warehouses to a delivery point; pick the fastest in a few lines of JavaScript.
Map a 15-minute delivery area around a storeUse the isochrone API to get the area reachable within 15 or 30 minutes of a store and shade it on a MapLibre map, for delivery pricing and site selection.
VN-2000 and WGS84: converting coordinates for map applicationsVN-2000 explained: provincial TM-3 zones, the X/Y convention in cadastral records, and converting VN-2000 ↔ WGS84 with an API.
Look up a land parcel by sheet and parcel number, or by coordinateWhat sheet number, parcel number and former ward code mean, how to look up a parcel through the API, how to find the former ward code, and coverage caveats.
Moving from Google Maps Platform to GMap Cloud: an API mappingHow Maps JavaScript, Geocoding, Places Autocomplete, Directions and Distance Matrix map to GMap Cloud APIs, and what to change in your code.Suggest addresses as people type and update old records after the merger.
Pick the nearest warehouse and map delivery areas by travel time.
Show light and dark maps of Vietnam and mark places on them.
Look up parcels and bring VN-2000 coordinates onto web maps.