Square Calculation

The online calculator calculates the side length, the diagonal, the perimeter and the area of a square. Select the parameter that you know and enter its value. Then click on 'Calculate'.

Calculate the square  Input Delete Entries Side length Diagonal Perimeter Area Decimal places 0 1 2 3 4 6 8 10  Results Side length Diagonal Perimeter Area

Formulas for calculating a square

Area

\(A = a · a\)

\(a =\sqrt{A}\)

Perimeter

\(\displaystyle P = 4 · a\)

\(\displaystyle a =\frac{P}{4}\)

Diagonal

\(d = \sqrt{2} · a \)

\(\displaystyle a =\frac{d}{\sqrt{2}}\)