This calculator helps you compute the side, diagonal, perimeter, and area of a square. The formulas are:
Given side \(x\):
Diagonal \(L = x\sqrt{2}\) | Perimeter \(P = 4x\) | Area \(A = x^2\)
Given area \(A\):
Side \(x = \sqrt{A}\) | Diagonal \(L = \sqrt{2A}\) | Perimeter \(P = 4\sqrt{A}\)
Given perimeter \(P\):
Side \(x = \dfrac{P}{4}\) | Diagonal \(L = \dfrac{P\sqrt{2}}{4}\) | Area \(A = \dfrac{P^2}{16}\)
Given diagonal \(L\):
Side \(x = \dfrac{L}{\sqrt{2}}\) | Perimeter \(P = 2\sqrt{2}L\) | Area \(A = \dfrac{L^2}{2}\)
How to use: Select what you know, enter its value, set decimal places, and click "Calculate".
Enter one known value to calculate the others.