Square Root Calculator

This calculator finds the square root of any number you enter, along with its square and cube root, giving you three related results in one place instead of working them out separately. The square root is the value that, multiplied by itself, gives back your original number; the square is your number multiplied by itself; and the cube root is the value that, multiplied by itself three times, gives your number. You simply type a number into the single input field and the calculator updates instantly, showing the square root as the main result, with the square and cube root displayed underneath. This suits schoolwork, checking your own working, or any calculation in geometry, construction or finance where you need to reverse a squared figure or confirm a measurement. Most numbers do not have a whole square root, so expect a decimal answer unless your number is a perfect square like 4, 9, 16 or 25. Enter zero or a positive number; a negative number has no real square root, since no real number multiplied by itself gives a negative result, so the calculator will flag this rather than return a value. The cube root, by contrast, works for negative numbers too, since a negative number cubed stays negative. Use the result alongside the worked example below to check your own calculations by hand.

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