AI Math SolverA square root calculator finds the number that, multiplied by itself, equals your input. Enter a value to get its square root, including results like the square root of 2 or 144.
The square root of a number n is the value that, when squared, equals n. Every positive number has two square roots (positive and negative); the principal root is the positive one.
Perfect squares like 1, 4, 9, 16 have whole-number square roots. Other numbers have irrational roots — √2 ≈ 1.414 — that never terminate or repeat.
The square root of a number is the value that, multiplied by itself, gives that number. For example, the square root of 9 is 3, because 3 × 3 = 9.
Enter the number and the calculator returns its principal (positive) square root, noting whether the result is exact (a whole number) or irrational.