What Is GeoJSON?
GeoJSON is a format for encoding geographic data structures using JSON. It supports geometry types like Point, LineString, Polygon, and MultiPoint, organized into Feature and FeatureCollection objects. It is the standard format for web mapping applications.
GeoJSON is essential for:
- Web Maps: Rendering data on Leaflet, Mapbox, or Google Maps.
- GIS Analysis: Processing spatial data in QGIS or ArcGIS.
- Location Services: Storing and exchanging geographic data.
- Data Visualization: Creating choropleth maps and heatmaps.
JSON vs. GeoJSON
| Feature | JSON | GeoJSON |
|---|---|---|
| Geometry | No spatial structure. | Standardized geometry types. |
| Coordinate System | Flexible, unstandardized. | WGS 84 (longitude, latitude). |
| Map Rendering | Requires conversion. | Native rendering in map tools. |
| Properties | All data is a property. | Separates geometry from properties. |
| Primary Use | General data exchange. | Mapping and GIS. |
How to Convert JSON to GeoJSON Online
- Paste JSON with coordinates: Include latitude/longitude or lat/lon fields.
- Click Convert: Each object becomes a GeoJSON Feature with Point geometry.
- Use in map tools: Load the GeoJSON into Leaflet, Mapbox, or any GIS.
Frequently Asked Questions
What coordinate field names are supported?
The tool detects latitude/longitude, lat/lon, and lat/lng pairs automatically.
Does it support geometry types other than Point?
Currently generates Point geometries. For LineString or Polygon data, the tool converts properties while preserving coordinate arrays.
Is this tool safe?
Yes. Processing is 100% client-side.
Real-World Examples
JSON to GeoJSON conversion is used when mapping business locations from spreadsheets, visualizing IoT sensor data on maps, converting address databases to geospatial formats, and preparing data for web map visualizations.
Related Tools
- GeoJSON to JSON — Extract properties from GeoJSON
- JSON to CSV — Convert JSON arrays to CSV