Cube Root Calculator | Find ∛x Instantly | PanMaths
Find the cube root of any number instantly. Supports perfect cubes, decimals, and negative numbers with detailed explanations.
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Cube Root Definition
∛x = y ⟺ y³ = xThe number which, when multiplied by itself three times, equals the original number.
Examples
Perfect Cube: ∛64
4 × 4 × 4 = 64, therefore ∛64 = 4. = 4
Negative Cube: ∛-125
-5 × -5 × -5 = -125, therefore ∛-125 = -5. = -5
Frequently Asked Questions
Can you take a cube root of a negative?
Yes! Because a negative number times itself three times is still negative (e.g., -2 × -2 × -2 = -8), cube roots of negative numbers are always defined and negative.
How is a cube root different from a square root?
A square root asks 'what squared equals x', while a cube root asks 'what cubed equals x'. Also, square roots of negatives are undefined in real numbers, but cube roots are always defined.