√64 = 8
64 is a perfect square: 8 × 8 = 64, so √64 = 8 exactly (no decimals).
Need another number? Use the square root calculator (also cube roots and other roots).
| Number | Square root |
|---|---|
| 60 | 7.7460 |
| 61 | 7.8102 |
| 62 | 7.8740 |
| 63 | 7.9373 |
| 65 | 8.0623 |
| 66 | 8.1240 |
| 67 | 8.1854 |
| 68 | 8.2462 |