Square Root of 256
√256 = 16
Perfect Square ✓
How to Find the Square Root of 256
The square root of 256 is the number that, when multiplied by itself, equals 256.
Since 16 × 16 = 256, the square root is exactly 16. This makes 256 a perfect square.
Nearby Square Roots
| Expression | Result |
|---|---|
| √251 | 15.842980 |
| √252 | 15.874508 |
| √253 | 15.905974 |
| √254 | 15.937377 |
| √255 | 15.968719 |
| √256 | 16 |
| √257 | 16.031220 |
| √258 | 16.062378 |
| √259 | 16.093477 |
| √260 | 16.124515 |
Need a custom calculation?
Open Square Root CalculatorCalculated and verified. Free math reference with no ads.