Calculate Area of Any Shape
Quickly find the area of squares, rectangles, triangles, circles and more with our free online calculator
Area Calculator
Select a shape below and enter the required dimensions to calculate its area
Area Calculation Result
Area Formulas Explained
Square Area
The area of a square is calculated by squaring the length of one of its sides. All sides of a square are equal in length.
Rectangle Area
The area of a rectangle is calculated by multiplying its length by its width. Opposite sides of a rectangle are equal.
Triangle Area
The area of a triangle is calculated by multiplying its base by its height and then dividing by two.
Circle Area
The area of a circle is calculated by multiplying π (pi, approximately 3.14159) by the square of the radius.
Trapezoid Area
The area of a trapezoid is calculated by adding the two parallel sides (bases), multiplying by the height, and dividing by two.
Unit Conversion
Our calculator automatically handles different units. Remember to convert all measurements to the same unit before calculating area manually.
1 ft = 12 in
1 m ≈ 3.28 ft
