Cube Root Calculator
Find the cube root of any number, including negative numbers, and its simplified radical form.
What is the Cube Root Calculator?
The cube root of x is the number that multiplied by itself three times gives x.
How does it work?
The decimal cube root is computed directly; perfect cubes are factored out to simplify the radical.
Formula
∛x × ∛x × ∛x = x
Example
∛54 = ∛(27 × 2) = 3∛2 ≈ 3.7798. ∛−27 = −3.
Frequently asked questions
Why do negative numbers have real cube roots?
Because a negative number multiplied by itself three times stays negative, e.g. (−3)³ = −27.
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