Square Root Calculator
Calculate the principal square root of a non-negative number.
Results are provided for general informational use. Verify important financial, health or legal figures before relying on them.
About this Square Root Calculator
The Square Root Calculator returns the principal square root of a number, meaning the non-negative value that multiplies by itself to produce the original input. It is useful for geometry, algebra and quick numeric checks.
For related tasks, try Exponent Calculator, Modulo Calculator or Average Calculator.
How the calculation works
The browser calculates the principal real square root. Negative inputs do not have a real-number square root, so this tool does not return complex values.
How to use it
- Enter a non-negative number.
- Select Calculate square root.
- Review the square root result.
Practical example
The square root of 144 is 12 because 12 × 12 = 144.
Frequently asked questions
Can I calculate decimal square roots?
Yes. Decimal inputs are supported.
Does it return complex numbers?
No. This tool is limited to real-number square roots.
What is the square root of zero?
Zero.
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