Circular Sector Area calculator.
Find the area of a circular wedge from its radius and centre angle.
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.
The centre angle is measured in degrees. A sector includes the centre; an annular wedge needs an inner-radius deduction.
A worked example
Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.
- Radius
- 2 m
- Centre angle
- 90 °
Sector area: 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.
Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-04. Calculation and review policy.