Cube Root Calculator
Find the real cube root of a positive or negative number.
Formula
y = ∛x; y³ = x.
Real cube root (approx.) ≈ (27)^(1÷3)
How to use
- Enter a real number.
- Keep the minus sign for negative values.
- Read its real cube root.
Examples
- ∛27 = 3; ∛(−8) = −2.
Frequently asked questions
Can a negative number have a cube root?
Yes. An odd power preserves the sign: ∛(−8) = −2.
Are complex roots included?
No. Only the unique real cube root is shown.
Is every result exact?
No. Irrational roots and numerical evaluation are shown as approximations.
Sources
Updated: