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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.

All calculations happen locally in your browser. No data is sent to any server.

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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