Calculate the area and perimeter of rectangles, squares, circles, triangles, and parallelograms.
| Area | |
| Perimeter |
This tool calculates both the area (the space enclosed by a shape) and perimeter (the total distance around its edges) for rectangles, squares, circles, triangles, and parallelograms — handy for flooring, fencing, landscaping, or homework problems where you need both measurements at once.
Example: a rectangle 10 units long and 5 units wide has an area of 50 square units and a perimeter of 30 units — enter your own dimensions and pick a shape above to calculate instantly.
This calculator covers the most commonly needed shapes: rectangle, square, circle, triangle, and parallelogram - each with its own area and perimeter formula.
It covers the most commonly needed shapes: rectangle, square, circle, triangle, and parallelogram, each with its own area and perimeter formula.
Yes — enter your shape's dimensions once, and both area and perimeter are calculated together, so you don't need to run the calculation twice.
Yes, each shape (rectangle, square, circle, triangle, and parallelogram) has its own dedicated area and perimeter formula.
Yes — enter the radius or diameter, and it calculates both the area (πr²) and circumference (2πr) for the circle.
This calculator currently covers rectangle, square, circle, triangle, and parallelogram, so shapes outside this list are not covered.