Math
Root Calculator
Compute the nth root of any number — square root, cube root, or any real n.
Inputs
Root Calculator
Result
3√27
3
- Check rⁿ
- 27
- Square root
- 5.19615242
How it's calculated
ⁿ√x = x^(1/n). For x < 0, only odd-integer n gives a real result.
Common questions
Can I take the square root of a negative number?
Not in real numbers — the answer would be an imaginary number. Odd roots such as the cube root do work for negatives.
Is the cube root of 27 exactly 3?
Yes: 3 × 3 × 3 = 27, so ³√27 = 3.
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