Enter a center coordinate and a radius in kilometers below to draw a circle on the map and see the area it covers. Everything is calculated locally in your browser.
Calculated locally in your browser — nothing is sent to our server.
How This Calculation Works
The circle is drawn directly on the map at the exact radius you enter (converted to meters for the map library), and its covered area is calculated using the standard circle-area formula, π × r². This is useful for visualizing delivery zones, service areas, search radii, or “within X km of this point” style questions.
FAQ
Does the circle account for the Earth’s curvature?
For the radius sizes most people use with this tool (a few to a few hundred kilometers), the difference is negligible. At very large radii (thousands of kilometers), a true geodesic circle would look slightly different from this one.
Is my data uploaded anywhere?
No. The circle and area are calculated entirely in your browser — nothing you enter here is sent to our server.
Where do I find a location’s coordinates?
Our own Address to Coordinates tool can look up coordinates for any place name.