a A d
Side (a)
Diagonal (d)
Area (A)
Result unit
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Table of contents:

  1. Perimeter of a Square Calculator
  2. What is the perimeter of a square
  3. Perimeter of a Square Formula

What is the perimeter of a square

Perimeter of a square is equal to sum of all square sides.

Since all sides of a square are equal, its perimeter can be found by multiplying the side length by 4:

P = side + side + side + side = 4 * side

Perimeter of a Square Formula

  • If given Side of a square (a):

    {P = 4a}

  • If given Diagonal of a square (d):

    {P = \dfrac{4d}{\sqrt{2}}}

  • If given Area of a square (A):

    {P = 4 \sqrt{A}}

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