Radius Map Generator
Create a straight-line geographic radius around a selected centre.
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What Radius Map Generator does
Choose a centre and radius, calculate circle values, and export GeoJSON.
How to use Radius Map Generator
- Choose or enter the centre.
- Set radius, unit, and polygon detail.
- Copy the centre or export the circle polygon.
Method and calculation
Area and circumference use plane circle formulas for the entered radius; export vertices are projected geodesically from the centre.
Privacy and external map tiles
Calculations and uploaded files remain in your browser. Visual map tiles are downloaded from the displayed map provider and are not hosted by Toolare. The page is therefore not fully offline.
Limitations
The radius is straight-line geographic distance, not driving coverage. The exported polygon is an approximation.
Related map tools
Coordinate ConverterConvert Decimal Degrees, DMS and Degrees Decimal Minutes.Coordinate ValidatorValidate pasted decimal and directional coordinate pairs.Distance Between CoordinatesCalculate straight-line geographic distance, bearing and midpoint.Bearing CalculatorFind initial and final geographic bearings and compass direction.
Frequently asked questions
Does this show drive time?
No. It represents straight-line distance.
Is the circle exact GeoJSON?
GeoJSON has no circle geometry, so export uses a configurable polygon approximation.