What is the principal square root?

The non-negative root. For example, √4 = 2 (not -2).

Can I use negative numbers?

For real numbers, √x is undefined when x < 0. This tool handles complex results for negative inputs.

Yes. All tools on QuickFreeTools are free with no signup.

Calculate square roots (√x). Get the principal (positive) root and see if the number is a perfect square.

Number

What is the principal square root?: The non-negative root. For example, √4 = 2 (not -2).
Can I use negative numbers?: For real numbers, √x is undefined when x < 0. This tool handles complex results for negative inputs.
Is this tool free?: Yes. All tools on QuickFreeTools are free with no signup.

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