Question 1

How do I calculate a square root?

Accepted Answer

The square root of a number is a value that, when multiplied by itself, gives the original number. For example, √25 = 5 because 5 × 5 = 25. You can use this calculator for exact and approximate square roots of any positive number.

Question 2

What is the square root of a negative number?

Accepted Answer

The square root of a negative number is an imaginary number. For example, √−9 = 3i (where i is the imaginary unit). This calculator shows both the imaginary result and the explanation.

Question 3

What is the difference between square root and cube root?

Accepted Answer

A square root (√) finds a number that multiplied by itself gives the original (√16 = 4). A cube root (∛) finds a number that multiplied by itself twice gives the original (∛27 = 3, because 3 × 3 × 3 = 27).

Question 4

Can this calculator find nth roots?

Accepted Answer

Yes. Enter a number and a root degree (n) to calculate any nth root. For example, the 4th root of 81 is 3, and the 5th root of 32 is 2.

Operation	Result
√ (square root)	—
∛ (cube root)	—
x² (squared)	—
x³ (cubed)	—

🔢 Square Root Calculator

📝 All Roots