API features

WGS84, GCJ-02, and BD-09

Work with the three coordinate systems commonly encountered across global and China-focused map products.

All source and target combinations

Convert between any supported pair, including same-system normalization when required.

Consistent coordinate order

Receive every result in a predictable [longitude, latitude] array for safer integration.

Map provider normalization

Align coordinates collected from international maps, China map providers, and location datasets.

Geocoding and mobility workflows

Prepare location values for map display, navigation, delivery, fleet, and geospatial analysis.

Safe out-of-region behavior

Preserve coordinates outside the applicable GCJ-02 region instead of applying an unsuitable offset.

API Document

HTTP Protocol:HTTPS

HTTP Method:GET

HTTP Endpoint:https://api.gugudata.io/v1/location/coordinateconverter

Response Type:application/json; charset=utf-8

DEMO Endpoint:https://api.gugudata.io/v1/location/coordinateconverter/demo

Live Demo:Try Interactive Demo

Postman Collection:Run in Postman

API Request Parameters

Name	Type	Is Required	Default Value	Remark
appkey	string	true	YOUR_APPKEY	API key used to authenticate the request.
from	string	true	WGS84	Source coordinate system. Canonical values are `WGS84`, `GCJ02`, and `BD09`; matching is case-insensitive for compatibility.
to	string	true	GCJ02	Target coordinate system. Canonical values are `WGS84`, `GCJ02`, and `BD09`; matching is case-insensitive for compatibility.
value	string	true	[120.54,32.74]	Coordinate pair in `[longitude,latitude]` format. Longitude must be between -180 and 180; latitude must be between -90 and 90.

API Response Parameters

Name	Type	Remark
dataStatus	object	Response metadata for the request.
dataStatus.requestParameter	string	Privacy-safe summary of the normalized request.
dataStatus.statusCode	integer	Application-level status code.
dataStatus.statusDescription	string	Human-readable application status message.
dataStatus.responseDateTime	string	Time at which the response was generated.
dataStatus.dataTotalCount	integer	Number of matching or returned records for this request.
data	object	Converted coordinate result.
data.coordinateFrom	string	Normalized source coordinate system.
data.coordinateTo	string	Normalized target coordinate system.
data.coordinateSourceValue	string	Validated source coordinate in `[longitude,latitude]` format.
data.coordinateDestinationValue	string	Converted coordinate in `[longitude,latitude]` format.

API Response Status Codes

Status Code	Explanation of Status Code	Remarks
200	Request processed successfully.	Some endpoints expose a separate application-level status field in the response body, such as `dataStatus.statusCode`.
400	Invalid request parameters or request format.	Check required fields, data types, and request body format.
401	Missing or unknown application key.	Provide a valid `appkey` with the request.
403	The application key is recognized but access is not allowed.	The key may be expired, inactive, or not permitted for the requested API.
429	Request rate or trial usage limit exceeded.	Reduce request frequency and retry with backoff. If a trial allowance is exhausted, check Trial Keys for remaining requests and subscribe to continue.
500	Internal service error.	Retry later or contact support if the error persists.
503	Upstream service unavailable.	Retry later; the requested upstream dependency is temporarily unavailable.

Remote MCP

AI client access

Use this API through GuGuData Remote MCP

Connect your AI client once, authorize in the browser, and the client can use the GuGuData API tools available to your account. You do not need to paste an appkey into the MCP client.

Endpoint https://mcp.gugudata.io/mcp

Open MCP Guide

Generic MCP configuration

{
  "mcpServers": {
    "gugudata": {
      "url": "https://mcp.gugudata.io/mcp",
      "transportType": "streamable-http"
    }
  }
}

Code Snippets

Run in Postman Open LLM Page

Frequently asked questions

Common questions about request limits, trials, renewal, and cancellation.

What does the 5 requests per second limit mean?

It is a request-rate limit, not a concurrency allowance. Keep your request rate at or below 5 per second. If the service returns a rate-limit response, reduce the frequency and retry with backoff.

Is total paid usage limited?

There is no total request cap during an active paid subscription and no usage-based overage charge.

How does the free trial work?

Each account can receive a limited trial key. Requests are shared across APIs in the same category. Check Trial Keys for the exact allowance and remaining requests.

How do renewal and cancellation work?

The plan renews annually until canceled. Manage or cancel the renewal from Dashboard → Orders & Billing. Access continues through the paid period after cancellation. See the Terms of Service for the current refund policy. If the billing portal is unavailable, contact support.

Technical support

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