Cube Root Calculator

Find the exact or decimal cube root of any positive or negative number.

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Understanding Cube Roots

The cube root of a number x is the number y which, when multiplied by itself three times (y × y × y), equals x.

Negative Cube Roots

Unlike square roots, you can take the cube root of a negative number. Because a negative multiplied by a negative is a positive, and multiplied by a third negative returns to negative, the cube root of -8 is exactly -2.