Cube Root Calculator

Find the cube root of any number, including negatives, with the simplified radical form for whole numbers.

Fractions and decimals both work.
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How to Find a Cube Root

The cube root of x is the number that, used three times in a multiplication, gives x. Unlike square roots, negative numbers have real cube roots: ∛−8 = −2.

∛x × ∛x × ∛x = x   ∛x = x^(1/3)

Worked Example

Tips

Perfect cubes to know: 1, 8, 27, 64, 125, 216, 343, 512, 729, 1,000.