Online Calculators > Math Calculators > Square Calculator

Square Calculator

Square Calculator to calculate the area, perimeter, and diagonal of a square. Simply enter the length of a side of the square, and the online square calculator will quickly calculate the area, perimeter, and diagonal.

Online Square Calculator

Side Length:
Area: 25
Perimeter: 20
Diagonal: 7.07106781

Square Formula

Following is the square formula that shows how to calculate area, perimeter, and diagonal of a square.
Area = x2
Perimeter = 4*x
Diagonal = √2*x, where
x = length of any side of the square


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