Square & Cube Root Calculator
Calculate the square root and cube root of any number.
Square root12.000000
Cube root5.241483
Ad space — always below the tool, never inside it
How to use square & cube root calculator
1Enter a numberPositive, negative or zero.
2Read both rootsSquare root and cube root are shown together.
Questions people ask
Negative numbers don't have a real square root — only complex numbers, which this calculator doesn't show.
Yes — unlike square roots, negative numbers have a real cube root (e.g. cube root of −8 is −2).