Square Root Calculator › Square root of 256
Square Root of 256
√256 = 16
256 is a perfect square: 16 × 16 = 256. Its square root is the whole number 16.
| Number | 256 |
| Square root (decimal) | 16 |
| Simplified radical | 16 |
| Perfect square? | Yes |
| Rational? | Yes |
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Frequently asked questions
Is 256 a perfect square?
Yes. 256 is a perfect square because 16 × 16 = 256, so √256 = 16.
What is the square root of 256 in simplest radical form?
√256 simplifies to the whole number 16.