Calculate the area of rectangles, triangles, circles, trapezoids, and parallelograms with this free area calculator.
Rectangle:
A = l × w
Triangle:
A = 1/2 × b × h
Circle:
A = πr²
Parallelogram:
A = b × h
Area is used in geometry, construction, design, flooring, painting, landscaping, and many everyday measurement problems.
It helps estimate material needs and compare the size of surfaces.
Your result shows the area of the selected shape using the dimensions entered. It also includes the formula and supporting values used in the calculation.
This helps you verify your work and understand how the shape’s dimensions affect total area.
Area is the amount of space inside a two-dimensional shape.
Area is written in square units, such as square feet, square meters, or square inches.
Area measures the space inside a shape, while perimeter measures the distance around it.
Yes. This calculator supports whole numbers and decimal values.