⬜ Area Calculator
Calculate area of rectangles, circles, triangles & more
How Area Calculation Works
- 1Select the shape you want to calculate the area for.
- 2Enter the required dimensions (length, width, radius, height, etc.).
- 3The calculator applies the appropriate formula for that shape.
- 4For rectangles: Area = length × width. For circles: Area = πr².
- 5Results are displayed with the full formula breakdown.
About Area Calculator
Calculate the area of common 2D shapes: rectangle, circle, triangle, trapezoid, ellipse, and parallelogram. Select a shape and enter dimensions for instant results.
Frequently Asked Questions
What units does the result use?
The result is in square units. If you enter measurements in centimeters, the area is in cm². If in feet, the area is in ft².
How do I calculate the area of an irregular shape?
For irregular shapes, try breaking them into simpler shapes (rectangles, triangles) and adding the individual areas together.
What is the formula for a trapezoid area?
Area = ½ × (base₁ + base₂) × height, where base₁ and base₂ are the parallel sides.