Find the square root of any non-negative number to high precision, along with a few related figures that often come up at the same time. Enter a number and the calculator returns its square root, its cube root, its square, and tells you whether the number is a perfect square with a whole-number root. This is handy for geometry, physics problems, standard-deviation work, or just checking homework. Because square roots of most numbers are irrational, the result is shown to many decimal places so you can round as needed. The calculator only accepts non-negative inputs for the square root, since real square roots of negative numbers do not exist. Everything is computed instantly and locally in your browser.