Square Root Calculator

The square root of x is the number that, when multiplied by itself, gives x. For example, sqrt(25) = 5 because 5 x 5 = 25.

A perfect square is an integer whose square root is also an integer. Examples: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100.

Not in the real number system. The square root of a negative number is an imaginary number. For example, sqrt(-4) = 2i, where i is the imaginary unit.

The cube root of x is the number that, when cubed, gives x. For example, cbrt(27) = 3 because 3^3 = 27. Cube roots of negative numbers are valid real numbers.

The nth root of x is a number r such that r^n = x. For example, the 4th root of 16 is 2 because 2^4 = 16. Use this to calculate any root.