Cube Root Calculator

Use this calculator to find the cube root of positive or negative numbers. Given a number x, the cube root of x is a number a such that a³ = x.

If x is positive, a will be positive. If x is negative, a will be negative. The Cube Root Calculator is a specialized form of our Radicals Calculator.

Example Cube Roots:

• The cube root of 64 is ³√64 = 4.
• The cube root of -64 is ³√(-64) = -4.
• The cube root of 8 is ³√8 = 2.
• The cube root of 10 is approximately ³√10 ≈ 2.154435.

What is a Cube Root as an Exponent? The cube root of x is the same as x raised to the 1/3 power. This is written as ³√x = x^(1/3).

What is the Cube Root of a Negative Number? The cube root of a negative number is defined as: ( -x )^(1/3) = -( x^(1/3) )

First take the cube root of the positive number, then make it negative.

Example Cube Roots of Negative Numbers:

• The cube root of -27 is ³√(-27) = -3.
• The cube root of -8 is ³√(-8) = -2.
• The cube root of -64 is ³√(-64) = -4.

Cube Roots Resulting in the Integers 1 Through 10:

• Cube root of 1 is ³√1 = 1.
• Cube root of 8 is ³√8 = 2.
• Cube root of 27 is ³√27 = 3.
• Cube root of 64 is ³√64 = 4.
• Cube root of 125 is ³√125 = 5.
• Cube root of 216 is ³√216 = 6.
• Cube root of 343 is ³√343 = 7.
• Cube root of 512 is ³√512 = 8.
• Cube root of 729 is ³√729 = 9.
• Cube root of 1000 is ³√1000 = 10.