Cube Root Calculator

Math

Calculate the cube root of a number. The cube root of n is the value that, when multiplied by itself three times, equals n. Written as ∛n or n^(1/3).

Formula

∛n = n^(1/3)
  • ∛n = n^(1/3)

Cube Root of 27

Inputs
  • Number: 27

The cube root of 27 is 3, because 3 × 3 × 3 = 27.

Frequently asked questions

What is a cube root?
The cube root of n is the value that, when multiplied by itself three times, equals n. Symbolized as ∛n or n^(1/3).
What is the cube root of negative numbers?
Negative numbers have real cube roots. For example, ∛(−27) = −3, because (−3) × (−3) × (−3) = −27.
How is cube root different from square root?
Cube root uses exponent 1/3, while square root uses 1/2. Square root of negative numbers is not real; cube root always exists.
What are perfect cubes?
Perfect cubes are numbers whose cube root is an integer (e.g., 1, 8, 27, 64, 125, 216, ...).