The square root of 256 is 16.
The square root of 256 is 16.
Because 16 × 16 = 256, 256 is a perfect square and its root is a whole number.
You can check it by squaring the result: 16² ≈ 256.
| √256 | = 16 |
| 16² | = 256 |
| ∛256 | = 6.349604 |
| Number | Square root | Note |
|---|---|---|
| 144 | 12 | perfect square |
| 169 | 13 | perfect square |
| 196 | 14 | perfect square |
| 225 | 15 | perfect square |
| 256 | 16 | this page |
| 289 | 17 | perfect square |
| 324 | 18 | perfect square |
| 361 | 19 | perfect square |
The square root of 256 is 16.
Yes. 16 × 16 = 256.
Rational, because it is the whole number 16.
The cube root of 256 is about 6.349604.
Yes. Use the calculator on this page, or open the full free Scientific Calculator with memory, history and keyboard support.