Math
Square Root Calculator
Find the square root of a number, the value that multiplied by itself gives the original number.
Formula
Square root of x is the number y such that y × y = x.
How it works
Enter a number that is zero or positive. The calculator returns its square root. For example, the square root of 144 is 12, because 12 × 12 = 144.
FAQs
What does the Square Root do?
It takes the values you enter and works out the square root for you, showing the result straight away.
What should I enter?
Enter ordinary numbers in the boxes above. If a value does not make sense for this calculation, the page will ask you to check it instead of showing a wrong answer.
Can I use the result for homework or everyday maths?
Yes. It is a general-purpose maths helper; for exam or professional work, still check the steps against your own working.