Cube Roots on Calculator

Reviewed by: David Chen, CFA | Mathematics & Financial Analyst

Calculating the cube root of a number can be complex if done manually. Our “cube roots on calculator” tool provides an instant, accurate solution for any real number, helping students, engineers, and professionals solve power-related equations in seconds.

Enter a Number (x):

Please enter a valid number.

The Cube Root is: 0

Cube Roots on Calculator Formula

³√x = y ⇔ y³ = x

The formula for finding a cube root involves finding a number y that, when multiplied by itself three times, equals x.
Formula Source: Encyclopedia Britannica

Variables:

x (Input Value): The number for which you want to find the cube root. It can be positive, negative, or zero.
y (Result): The cube root value such that y × y × y = x.

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What is cube roots on calculator?

A cube root of a number is a value that, when cubed (multiplied by itself three times), gives that number. For instance, the cube root of 27 is 3 because 3 × 3 × 3 = 27. Unlike square roots, every real number has exactly one real cube root.

Using a cube roots on calculator is essential for precision, especially when dealing with non-perfect cubes like 10 or 50. This tool utilizes high-precision algorithms to provide the most accurate decimal representation possible.

How to Calculate cube roots on calculator (Example)

Identify the number you wish to find the root of (e.g., 64).
Input the value into the calculator’s input field.
Press the “Calculate” button.
The result will appear: In this case, 4, because 4³ = 64.

Frequently Asked Questions (FAQ)

Can you find the cube root of a negative number?

Yes. Unlike square roots, cube roots of negative numbers are real. For example, the cube root of -8 is -2.

What is the cube root of 100?

The cube root of 100 is approximately 4.641588. Since 100 is not a perfect cube, the result is an irrational number.

How does this calculator work?

It uses the built-in mathematical function Math.cbrt() which handles floating-point precision for both positive and negative values.

What are perfect cubes?

Perfect cubes are integers whose cube roots are also integers, such as 1, 8, 27, 64, 125, and 216.