Root Calculator (Square, Cube, nth Root)
Root calculator: square root, cube root or any nth root of a number, and the inverse power.
y = n√x
How to use this calculator
- Choose the quantity you want under “Solve for”.
- Type the known values and pick their units: any combination works.
- The result updates as you type. Open “Show the steps” to see the substitution.
The nth root of x is the number y with yⁿ = x, written x^(1/n).
Set n = 2 for a square root and n = 3 for a cube root.
Formula
y = n√x
| Symbol | Quantity | Units |
|---|---|---|
| x | Number | — |
| n | Root index | — |
| y | Root | — |
Worked example
Given: x = 1 000 · n = 3
y = x1/n
Result: y = 10
Frequently asked questions
What is the cube root of 1000?
10, because 10³ = 1000.