worldofcalcsArea Calculator 📏
math.area.formulas.formula1
Area
78.54
square units
About Area Calculator
Calculate the surface area of common 2D geometric shapes. Useful for construction, land measurement, and geometry homework.
Supported Shapes
- Circle: Circle: Based on radius.
- Rectangle: Rectangle: Based on length and width.
- Triangle: Triangle: Based on base and height.
- Square: Square: Based on side length.
How to Use
- Select the shape type from the top buttons.
- Enter the required dimensions (e.g., radius, length).
- The area is calculated automatically as you type.
Formulas
Circle: Circle: A = πr²
Rectangle: Rectangle: A = length × width
Triangle: Triangle: A = ½ × base × height
Square: Square: A = side²