About the Square Root Calculator
Find the square root of any number, check for perfect squares and simplify radicals like √72 = 6√2.
Also known as: sqrt calculator, root calculator, simplify square root, radical calculator, square root of.
How to use this calculator
- Enter number.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
√x = y where y² = x
Worked example
Using the values pre-filled in the calculator above:
- Number = 72
the calculator returns:
- √72: 8.4852813742
- Simplified radical: 6√2
- Perfect square?: No
- Check: 8.48528137² = 72