√324 = 18
324 is a perfect square: 18 × 18 = 324, so √324 = 18 exactly (no decimals).
Need another number? Use the square root calculator (also cube roots and other roots).
| Number | Square root |
|---|---|
| 225 | 15 |
| 250 | 15.8114 |
| 256 | 16 |
| 300 | 17.3205 |
| 400 | 20 |
| 500 | 22.3607 |
| 529 | 23 |
| 625 | 25 |