Square Root Calculator › Square root of 9
Square Root of 9
√9 = 3
9 is a perfect square: 3 × 3 = 9. Its square root is the whole number 3.
| Number | 9 |
| Square root (decimal) | 3 |
| Simplified radical | 3 |
| Perfect square? | Yes |
| Rational? | Yes |
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Frequently asked questions
Is 9 a perfect square?
Yes. 9 is a perfect square because 3 × 3 = 9, so √9 = 3.
What is the square root of 9 in simplest radical form?
√9 simplifies to the whole number 3.