Mark your locations. Find the smallest circle that contains them all.
Radius—Add points to begin
Diameter—
Center · latitude, longitude—
Drag markers to refine their positions. Amber markers lie on the circle’s boundary.
How it works & privacy
The radius is the greatest surface distance from the computed center to your points, minimized over a spherical Earth (mean radius 6,371.0088 km). It is not a road distance or a survey-grade ellipsoidal measurement. The flat map can distort the circle’s appearance.
Calculation and point-file import happen in your browser. Points are not saved to this website; download them before leaving. Map tiles are requested from the configured map provider (OpenStreetMap by default), which receives your IP address and the map areas you view. No address lookup or location permission is used.