Square root calculator
Calculate square roots, cube roots, and nth roots. Non-perfect squares are simplified to radical form.
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Square roots
√x = the number that, when squared, gives x. √144 = 12 because 12² = 144.
Simplifying radicals
Factor out perfect squares: √72 = √(36×2) = 6√2. √50 = √(25×2) = 5√2.
Perfect squares
1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256...
Cube roots
³√27 = 3. ³√64 = 4. ³√125 = 5. Use this calculator for any nth root.
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