Free KML Circle Generator for Google Earth
Generate KML LineString, Polygon, or MultiGeometry circles for Google Earth and maps. Free tool with Haversine math — radii from 1 m to 20,000 km.
Key takeaways
- Center is decimal latitude, longitude separated by a comma
- Choose LineString, Polygon, or MultiGeometry output
- Download a .kml file or copy the XML to open in Google Earth Pro
- Very large circles and polar regions use a thin polar cut for cleaner KML rendering
What geometries mean
LineString draws only the outline. Polygon fills the circle. MultiGeometry includes both outline and fill — the most common choice for service-area maps.
How the math works
Each perimeter vertex is plotted from the center with the Haversine destination formula (spherical Earth). That keeps large circles accurate enough for Google Earth visualization.
Where to use the file
Open the downloaded .kml in Google Earth Pro, import into GIS tools that support KML, or share coverage rings for franchise territories and radar-style radius maps.
Frequently asked questions
Is the Circle Generator free?
Yes. Generate and download KML circles on /free-tools/circle-generator with no paid subscription.
What center format do I need?
Enter decimal latitude and longitude separated by a comma, for example 17.4401, 78.3489 or 47.716142, -116.985588.
How large can the radius be?
From 1 meter up to 20,000 kilometers — nearly planetary coverage for visualization.
What is MultiGeometry?
MultiGeometry combines a LineString outline and a Polygon fill in one KML placemark so the circle shows stroke and fill together.
Can I include the center point?
Yes. Enable Include center Point placemark to drop a marker at the circle center inside the same KML file.
Will it work near the poles?
KML cannot cleanly fill polygons that enclose a pole. This tool applies a thin polar cut to reduce wrapping artifacts, best viewed in Google Earth Pro.
Does every map app render KML the same way?
No. Design for Google Earth Pro first. Very large circles, antimeridian crossings, and polar regions can look different in other viewers.
Is this a substitute for driving-time isochrones?
No. This draws geodesic distance circles, not traffic-based drive-time polygons. Use it for radius coverage and visualization.
Related resources
Open Circle Generator — free for local businesses and agencies.