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Basic Math Calculators

Cube Root Calculator

Calculate the cube root of positive or negative numbers, identify perfect cubes and simplify cube-root radicals.

Enter values

Results update as you type.

Result

∛54

3.7797631497

Simplified radical
3∛2
Perfect cube?
No

About the Cube Root Calculator

Calculate the cube root of positive or negative numbers, identify perfect cubes and simplify cube-root radicals.

Also known as: cbrt calculator, third root, cube root of, simplify cube root.

How to use this calculator

  1. Enter number.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

∛x = y where y³ = x

Worked example

Using the values pre-filled in the calculator above:

  • Number = 54

the calculator returns:

  • ∛54: 3.7797631497
  • Simplified radical: 3∛2
  • Perfect cube?: No