Processed locally — your file never leaves your device
GeoJSON Centroid
Find the centroid (center point) of GeoJSON, KML or GPX features — entirely in your browser.
Drop a GeoJSON, TopoJSON, KML, KMZ, GPX, zipped Shapefile or CSV file hereor click to choose a file from your deviceNothing is uploaded — the file is detected and processed entirely on your device.
How it works
- Select or drop a .geojson, .kml or .gpx file.
- Click Centroid to compute the center point of every feature locally.
- Preview the points on the map and download them as GeoJSON.
Frequently asked questions
- What is a centroid?
- The average position of a shape's geometry — its balance point. For a polygon it's the middle of its area; for a line, the middle of its vertices.
- Is my file uploaded anywhere?
- No. Centroids are computed on your device with Turf.js.
- Can the centroid fall outside the shape?
- Yes, and that's expected. A crescent or an L-shaped polygon has its centroid outside its own boundary — the centroid is a mathematical average, not a guaranteed interior point.
- Does each feature get its own centroid?
- Yes. Every feature in the file produces one point, keeping its original properties.