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Square Root Calculator

Calculate square roots, cube roots, and nth roots. Shows simplified radical form.. Gratuit, sans inscription, fonctionne dans votre navigateur.

À propos de Square Root Calculator

This square root calculator computes square roots, cube roots, and any nth root of a number. Enter a number and choose the root type (square, cube, 4th, or any custom root). The calculator instantly shows the result, checks whether the number is a perfect square or cube, and displays the simplified radical form for integers (e.g., √72 = 6√2). Quick-select buttons for common roots make it easy. All calculations happen in your browser — no data leaves your device.

Questions fréquentes

What is a square root?
The square root of a number is a value that, when multiplied by itself, gives the original number. For example, √25 = 5 because 5 × 5 = 25.
What is a perfect square?
A perfect square is a number whose square root is an integer. Examples: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100. The calculator automatically detects perfect squares.
How is the simplified radical calculated?
The calculator factors out perfect squares from under the radical. For example, √72 = √(36×2) = 6√2. It finds the largest perfect square factor.

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