Cube Root Calculator
Cube root of any number.
Enter your values
ⓘ Live results
Results
- Cube root
- 7
- 5th root
- 3.214096
- Square root
- 18.520259
- Cube of the number
- 40353607
- Is it a perfect cube?
- Yes
Quick answer
The cube root of x is the number that, multiplied by itself three times, gives x — and it works for negatives too.
∛x = x^(1/3)
How to use the Cube Root Calculator
- 1Enter the number you want the cube root of.
- 2Optionally enter another root index.
- 3Negative numbers work for odd roots.
Worked example
Using the values the calculator loads with:
Inputs
- Number343
- Other root (n)5
Results
- Cube root7
- 5th root3.214096
- Square root18.520259
- Cube of the number40353607
- Is it a perfect cube?Yes
Frequently asked questions
Can I cube root a negative?
Yes — the cube root of −27 is −3.
What are perfect cubes?
1, 8, 27, 64, 125, 216, 343, 512, 729, 1000.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.