Map Radius Tool
Draw a radius circle around any location and calculate its area, circumference and diameter. No registration required.
How to use the Map Radius Tool
- Enter valid geographic coordinates or click directly on the map to select a point.
- Adjust the measurement options, add any required points, and update the result.
- Inspect the values and units in the result panel and verify that the inputs are correct.
- Copy or export the available result. Only share coordinates or files you are comfortable disclosing.
How the results are calculated
Calculations use geographic coordinates and spherical models where applicable. Results can differ from ellipsoidal geodesics and never imply legal or survey-grade precision.
Map tiles provide visual context and are not proof of administrative boundaries or surface elevation.
Accuracy, privacy and limitations
Browser-based coordinates, measurements and file conversions are educational and planning aids, not guaranteed official measurements. Do not use these results for legal property boundaries, professional surveying, emergency navigation or safety-critical decisions. Browser map tiles may be requested from third-party tile providers.
Common questions
Is this tool free to use?
Yes. Our basic browser tools can be used without an account.
Can I rely on the map as an official boundary?
No. The map is for visualization. Always check the relevant official agency for legal boundary decisions.
Can I use it on my phone?
The interface is designed for mobile browsers, though accuracy and GPS permissions depend on your device and browser.
Explore more interactive map tools, or read our geographic data methodology.