Find the square root of any number instantly. A square root is a value that, when multiplied by itself, equals the original number.
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Results
Square Root
4.000000
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Formula
Square Root = √number
How to Use This Calculator
How to Use
- 1
Enter a positive number.
- 2
Click calculate to find its square root.
Frequently Asked Questions
Frequently Asked Questions
What is a square root?
A square root is a value that, when multiplied by itself, gives the original number. For example, √9 = 3 because 3 × 3 = 9.
Can I find the square root of a negative number?
In real numbers, no. Square roots of negative numbers are imaginary numbers, which are beyond basic calculators.
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About This Calculator
This calculator uses the formula: Square Root = √number. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.
Built and maintained by the CalcSmart team. Last updated March 2026.
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