Free · Wrap a point cloud

Convex Hull Maker

Draw the smallest simple convex polygon that wraps around a set of points.

Clear map preview
Private in your browser
GeoJSON download

Work with map data

Use the example or add your own GeoJSON. Results stay in this browser tab.

Point collection

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {
        "id": 1,
        "name": "Etobicoke"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.49,
          43.66
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "id": 2,
        "name": "Eglinton West"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.44,
          43.7
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "id": 3,
        "name": "Downtown"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.39,
          43.65
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "id": 4,
        "name": "Leaside"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.35,
          43.71
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "id": 5,
        "name": "Leslieville"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.31,
          43.67
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "id": 6,
        "name": "Scarborough"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.26,
          43.73
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "id": 7,
        "name": "Sunnyside"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.42,
          43.61
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "id": 8,
        "name": "Port Lands"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.33,
          43.62
        ]
      }
    }
  ]
}

Result view

Map previewGeoJSON

Making the map resultTurf is loading in this tab.

StatusLoading

EngineTurf.js

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FormatGeoJSON

Three simple steps

How to use it

Paste at least three GeoJSON points.
Check the outer wrap around all points.
Check the map, then copy or download the GeoJSON result.

Your map data stays on this device

Turf.js reads and changes the GeoJSON inside this browser tab. Bookify does not upload or save it. Close the tab and the working copy is gone.