Convert ArcGIS JSON geometries to GeoJSON geometries and vica-versa.

Usage no npm install needed!

<script type="module">
  import terraformerArcgis from 'https://cdn.skypack.dev/@terraformer/arcgis';



npm travis standard

Convert ArcGIS JSON geometries to GeoJSON geometries and vice versa.


npm install @terraformer/arcgis

API Reference


Terraformer.arcgisToGeoJSON(JSON, [idAttribute]) ⇒ object

Converts ArcGIS JSON into GeoJSON.

Kind: static method of Terraformer
Returns: object - GeoJSON.

import { arcgisToGeoJSON } from "@terraformer/arcgis"

  "spatialReference": {
    "wkid": 4326

>> { "type": "Point", "coordinates": [ -122.6764, 45.5165 ] }
Param Type Description
JSON object The input ArcGIS geometry, feature or feature collection.
[idAttribute] string When converting an ArcGIS Feature its attributes will contain the ID of the feature. If something other than OBJECTID or FID stores the ID, you should pass through the fieldname explicitly.

Terraformer.geojsonToArcGIS(GeoJSON, [idAttribute]) ⇒ object

Converts GeoJSON into ArcGIS JSON.

Kind: static method of Terraformer
Returns: object - ArcGIS JSON.

import { geojsonToArcGIS } from "@terraformer/arcgis"

  "type": "Point",
  "coordinates": [45.5165, -122.6764]

>> { "x":-122.6764, "y":45.5165, "spatialReference": { "wkid": 4326 } }
Param Type Description
GeoJSON object The input GeoJSON Geometry, Feature, GeometryCollection or FeatureCollection.
[idAttribute] string When converting GeoJSON features, the id will be set as the OBJECTID unless another fieldname is supplied.


Browser (from CDN)

This package is distributed as a UMD module and can also be used in AMD based systems or as a global under the Terraformer namespace.

<script src="https://unpkg.com/@terraformer/arcgis"></script>
Terraformer.arcgisToGeoJSON(/* ... */);


const Terraformer = require('@terraformer/arcgis');

Terraformer.geojsonToArcGIS(/* ... */);

ES module in the browser

<script type='module'>
  import { arcgisToGeoJSON } from 'https://unpkg.com/@terraformer/arcgis?module';

  // look ma, no build step!
  arcgisToGeoJSON(/* ... */);



Type definitions for @terraformer/arcgis can be found at @types/terraformer__arcgis. To install into your own project:

npm install @types/terraformer__arcgis


| Project | Language | Status | Maintainer | | - | - | - | - | | arcgis2geojson | Python | Incomplete | @chris48s |