ā Square Root Calculator
Square root, cube root and nth root of any number
Enter 2 for square root, 3 for cube root, or any n for nth root
About this calculator
The Square Root Calculator finds the number that, multiplied by itself, gives your input. Enter any non-negative number to get its principal square root, plus the perfect-square check and both positive and negative roots where relevant. It shows the Newton-method iterations so you can see the approximation converge.
Tip: for mental estimates, bracket between perfect squares ā the square root of 50 sits between 7 and 8, closer to 7, which gets you within a few percent instantly.