Math
Square Root Calculator
Enter a number to find its square root and squared check.
Your details
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Your result
Based on the values you enter
Square Root result
Enter values to calculate.
Your result explanation will appear here.
Useful next checks
- Use the result to check your working or homework.
- Change one input at a time to see how the answer moves.
- Read the method below if you want the steps.
Intro
Use this square root calculator to find the real square root of a positive number.
How it works
Enter a number. The calculator returns the value that multiplies by itself to make your input.
Formula
If x squared = n, then x is the square root of n.
Example calculation
The square root of 144 is 12 because 12 x 12 = 144.
Frequently asked questions
- This starter calculator supports real square roots only.
- Negative inputs require complex numbers, which can be added later.
Can I enter negative numbers?
This version supports real square roots, so the number must be zero or positive.
What is a square root?
A square root is a number that produces the original value when multiplied by itself.