Overlapping Circular Areas calculator.
Avoid double counting where two circular measured areas overlap.
Your inputs
Use measurements from your plan and properties from your chosen product. Any prefilled values are illustrative.
A clear estimate starts here.
Enter your dimensions and product details to see the quantity and purchase breakdown.
Formula and assumptions
How this calculation works.
Handles disjoint circles, containment and a partial lens. This union differs from an annulus, where an entire concentric inner circle is removed.
A worked example
Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.
- First radius
- 1 m
- Second radius
- 1 m
- Centre separation
- 0 m
Combined area counted once: 3.14 m²
Before you purchase
Use dimensions from your plan and properties from your chosen product. Any design spacing, section or fixing pattern must already be specified.
Handles disjoint circles, containment and a partial lens. This union differs from an annulus, where an entire concentric inner circle is removed.
Dimensions, quantities, prices, timing and product properties are supplied by you. This tool does not select construction specifications or assess structural, electrical or hydraulic suitability.
Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-04. Calculation and review policy.