Math
Square Root Calculator
Calculate the square root of any number instantly. Also shows the squared value for reference.
Square Root
β
How It Works
The square root of a number N is the value that, when multiplied by itself, gives N. β144 = 12 because 12 Γ 12 = 144. Non-perfect squares result in irrational decimals.
Example
β144 = 12. β2 β 1.414214. β10 β 3.162278. β100 = 10.
Frequently Asked Questions
What is a perfect square?
A number whose square root is a whole number: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225...
Can you square root a negative number?
Not with real numbers. The square root of a negative number is an imaginary number (e.g., β-1 = i). This is used in complex number mathematics.
What is the difference between square root and cube root?
Square root finds what number squared equals N. Cube root finds what number cubed equals N. β8 = 2 because 2Β³ = 8.