How to use the Power & Root Calculator
- Enter the number x.
- Enter the power or root n.
- Read x to the power n, the n-th root, square, cube and roots.
How it's calculated
Show the formula
xn = x multiplied by itself n times · n-th root of x = x1/n
Even roots of negative numbers are not real numbers and show as —.
Worked example
These are the example numbers the calculator opens with. Change any of them above to see your own result.
You enter
| Number (x) | 144 |
|---|---|
| Power / root (n) | 2 |
You get
| x to the power n | 20,736 |
|---|---|
| n-th root of x | 12 |
| Square root | 12 |
| Square | 20,736 |
| Cube | 2,985,984 |
| Cube root | 5.241483 |
Tips
- Even roots of negative numbers are not real numbers, so they show as —.
Frequently asked questions
What is the square root of 144?
12, because 12 × 12 = 144.
What is a cube root?
The number that, multiplied by itself three times, gives the original. The cube root of 27 is 3.