Area Calculator
Find the area of standard two-dimensional shapes: circles, rectangles, triangles, trapezoids, ellipses, parallelograms, and sectors.
Select Shape
Results
| Calculated Area | — |
|---|---|
| Formula | — |
Calculating Area
Area measures the size of a two-dimensional surface. It represents the number of unit squares that fit inside a shape's boundaries.
Common Area Formulas
- Circle: $A = \pi r^2$
- Rectangle: $A = l \times w$
- Triangle: $A = 0.5 \times b \times h$
- Trapezoid: $A = 0.5 \times (a + b) \times h$
- Ellipse: $A = \pi \times a \times b$
- Parallelogram: $A = b \times h$
- Sector: $A = \pi r^2 \times (\theta / 360^\circ)$
Disclaimer. Verify results and calculations with professionals before making critical academic, scientific, or business decisions.