Power Calculators

√ Square Root Calculator

Find the principal square root of a non-negative number.

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Enter details

Fill in the details and click Calculate to see your results.


Also available in our Android app, with charts and full breakdown tables.

📘 About the Square Root

Square root is the inverse of squaring for non-negative inputs.

🧮 Formula

Where

  • x = input
  • sqrt(x) = x^(1/2)
Only non-negative inputs have real principal square roots.

✏️ Worked example

Square root of 144

You enter
Number144
You get
Square Root12
Valid Input1

The answer is 12.

Try this example →

🧭 How to use this calculator

What you enter

  • Number

What you get

  • Square Root
  • Valid Input

💡 Important

  • Negative real inputs are outside the domain.

❓ Frequently asked questions

What is the square root of 144?

12.