Select a shape and enter its dimensions to calculate the area.
Area is the amount of space inside a two-dimensional shape. It is measured in square units such as cm², m², or ft². Understanding area is useful in everyday situations like measuring a room for flooring, calculating garden space, or estimating paint coverage for a wall.
| Shape | Formula |
|---|---|
| Square | side × side |
| Rectangle | width × height |
| Circle | π × radius² |
| Triangle | ½ × base × height |
| Trapezoid | ½ × (base1 + base2) × height |
Area is always expressed in square units — cm², m², km², in², or ft² depending on the unit of measurement used.
Break it down into simpler shapes like rectangles and triangles, calculate each area separately, then add them together.
Area measures the space inside a shape, while perimeter measures the total length of its outer boundary.