Area and Perimeter > Square

Area and Perimeter: Square

This online calculator is a free online tool to help you in calculate area and perimeter of Square.


Enter 1 value

edges (a) =
diagonals (d) =
Round to decimal places.
Area A =
Perimeter P =


Square Area and Perimeter of a Square
  • P – perimeter
  • A – area
  • a – edges
  • d – diagonals

You may need: Area and Perimeter of Rectangle


Square is a plane figure with four equal straight sides and four right angles. The edge/sides of square are in the same length and as well as the diagonal from one point to other point. Square is one of the most basic shape in mathematics.

The standard formula to count the Area of Square

A= a.a or a2
A = area
a = side of the square

The standard formula to count the Perimeter of Square

P= 4a
P = perimeter
a = side of the square

The Instruction to use the Calculator Online to calculate the Area and Perimeter of Square

1. First, input 1 value of the edges/diagonal in the square (The a column)
2. Next, you can choose what decimal places you need. It can 1 or 2 or whatever you want.
3. And then, click “Calculate Button” and the answer (Perimeter and Area) will automatically appear.
4. To count another number, just repeat the first step.

Example of the usage of calculator online to count the Area and Perimeter of Square

1. First, enter “5” in the column “a / edges” of the Square.
2. Then click enter or “Calculate” button.
3. You will find the answer right there on the Area A column and Perimeter P column. The area is 25.00 and the Perimeter is 20.00.