Fourth Root Calculator
This Fourth Root Calculator helps you find the number that, when raised to the fourth power, equals the input value. It’s useful for students, engineers, and anyone working with powers and roots. Just enter a number to instantly calculate its fourth root.
Fourth Root Calculator
Fourth Root Formula
$$b = \sqrt[4]{a}$$
Where
- $$a$$ is the input number
- $$b$$ is the fourth root of $$a$$
For example, if $$a = 81$$, then $$b = \sqrt[4]{81} = 3$$, because $$3^4 = 81$$.
The fourth root of a number is a value that, when multiplied by itself four times, gives the original number. It is used in various scientific, engineering, and mathematical calculations, such as solving polynomial equations or analyzing physical relationships involving exponential growth or decay. The calculator supports both positive real numbers and outputs the principal (positive) root.