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Square Root Calculator

Find the square root of any number.

Last updated: 25 Aug 2026

Quick answer

The square root of a number is the value that, multiplied by itself, gives that number. For example, √144 = 12. Enter a number above to find its square root.

Find the square root of any non-negative number — √x is the value whose square is x.

How to find a square root

  1. 1 Enter a number.
  2. 2 We compute its square root.
  3. 3 The result appears instantly.

Frequently asked questions

What is a square root?
A value that, when multiplied by itself, gives the original number — e.g. √144 = 12.
Can I find the root of a negative number?
Not as a real number; square roots of negatives are imaginary.
What is a perfect square?
A number whose square root is a whole number, like 16, 25 or 144.

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