Cube Root Calculator

Find the number whose cube equals your input

Cube Root Formula

The cube root of a number is the value that produces the original number when multiplied by itself three times. Unlike square roots, cube roots are defined for negative real numbers because a negative number cubed remains negative. Perfect cubes such as 8, 27, and 64 have integer cube roots, while most other numbers have decimal or irrational cube roots. This calculator identifies perfect cubes and gives useful approximations for non-perfect cubes.

What Is a Cube Root?

A cube root reverses cubing. If y³=x, then y is the cube root of x. Because multiplying three negative numbers gives a negative result, negative numbers also have real cube roots.

Applications of Cube Roots

Frequently Asked Questions