Geofence Builder: Create Radius and Polygon Boundaries
Design custom map boundaries with our free geofence builder. Draw polygons or set radius circles and export GeoJSON coordinates instantly in your browser.
About Geofence Builder
The Geofence Builder allows you to create virtual geographic boundaries on an interactive map. Whether you need a circular perimeter based on a fixed radius or a complex polygon boundary, you can define your zone and retrieve the corresponding geographic coordinates in seconds.
Designed for developers, fleet managers, and marketers, this tool runs entirely in your web browser with no software installation or account creation required. Generate clean coordinate sets and GeoJSON structures directly on your device without transmitting private location data to external servers.
Key features
- Draw custom polygon geofences directly on the interactive map
- Define circular radius zones by setting distance in meters or miles
- Export boundaries to standard GeoJSON format instantly
- Search locations quickly using address or coordinate lookups
- Runs entirely in your web browser with zero data stored
- Toggle between satellite, street, and terrain map layers
How to use Geofence Builder
- Search for a location or pan across the interactive map.
- Select either the radius circle or custom polygon drawing tool.
- Click on the map to place boundary points or adjust the radius distance.
- Review the calculated area and latitude and longitude coordinates.
- Export the finished geofence boundary as a GeoJSON file.
Who is it for?
- Mobile app developers configuring location-based notification triggers
- Fleet managers establishing dispatch perimeters and delivery zones
- Marketers setting geographic coordinates for localized advertising campaigns
- Drone pilots outlining operational flight areas and safety zones
- Asset tracking teams monitoring vehicle arrival and departure events
Frequently asked questions
What is a geofence?
A geofence is a virtual perimeter defined around a physical geographic location. It can take the form of a circle with a defined radius or an irregular polygon shaped around specific streets or property lines.
Can I export my geofences as GeoJSON?
Yes. Once you finish drawing a radius or polygon geofence, you can copy or download the coordinates in standard GeoJSON format for direct use in mapping libraries and backend applications.
Is this geofence builder free to use?
Yes, the tool is completely free to use without requiring an account or subscription.
What is the difference between a radius and a polygon geofence?
A radius geofence is a circle defined by a central coordinate and a distance measure, making it ideal for proximity alerts. A polygon geofence uses multiple connected coordinate points to outline precise shapes such as property lines, municipal borders, or specific neighborhoods.
Are my coordinates or map locations saved on your servers?
No. The geofence builder operates client-side in your web browser, meaning your coordinates and location queries remain private on your device.