Calculator area of a square

Enter the side length (or radius of a incircle or excircle), provide the accuracy of the calculation and click on "Calculate". Calculator will calculate the area of the square.

Calculator perimeter of the square


area square
decimal places

The square is a planimetric figure, rectangle, in which all sides are equal and all the angles are right angles. To set the square is necessary and sufficient to specify two points on a coordinate plane corresponding to any two of the corners and take them into account adjacency.

The square is both a rhombus and a rectangle, and vice versa: each figure that is both a rhombus and a rectangle is a square.

The square is always possible to inscribe a circle. Around the square is always possible to describe a circle.

The area of the square is S=a²=2R²=4r²