Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Geometry
Circle Area Calculator
Calculates the area enclosed by a circle from its radius using A = π·r². Ideal for geometry homework, landscaping projects, or sizing circular spaces like pools, garden beds, or pipe cross-sections.
Geometry
Circle Arc and Sector Calculator
Calculate the arc length, sector area, or circular segment area for a given radius and central angle in degrees or radians. Perfect for geometry problems, engineering layouts, and design work.
Key differences
| Circle Area Calculator | Circle Arc and Sector Calculator | |
|---|---|---|
| Category | Geometry | Geometry |
| Inputs required | 1 | 4 |
| Result | Circle Area (square units) | Result (units) |
| What it does | Calculates the area enclosed by a circle from its radius using A = π·r². Ideal for geometry homework, landscaping projects, or sizing circular spaces like pools, garden beds, or pipe cross-sections. | Calculate the arc length, sector area, or circular segment area for a given radius and central angle in degrees or radians. Perfect for geometry problems, engineering layouts, and design work. |