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Diagonal of Square Calculator

Find the diagonal of a square. Free online calculator with instant results — no login needed.

Diagonal

What is the Diagonal of Square Calculator?

Find the diagonal of a square. Free online calculator with instant results — no login needed.

Enter your values above and the result updates instantly. The same for any square.

Formula

Diagonal = side × √2

Example

Diagonal

FAQs

Example?

Side 5 → 7.071.

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