Square Root Calculator
Calculate square roots & nth roots
How to Use
Enter a number
Input the number you want to find the root of.
Choose root type
Select square root (√), cube root (∛), or enter a custom nth root.
View result
See the root value and simplified radical form if applicable.
Frequently Asked Questions
What is a square root?
The square root of x is a number that when multiplied by itself equals x. √16 = 4 because 4 × 4 = 16.
Can negative numbers have square roots?
Not in real numbers. √(-1) = i (imaginary unit). Our calculator works with positive numbers only.
What is a perfect square?
A number whose square root is an integer: 1, 4, 9, 16, 25, 36... Perfect squares have whole number roots.
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