√149 ≈ 12.2066
√149 is an irrational number, so its decimals never end or repeat. It sits between 12 and 13 because 12² = 144 and 13² = 169.
| Decimal places | Value |
|---|---|
| 0 | 12 |
| 1 | 12.2 |
| 2 | 12.21 |
| 3 | 12.207 |
| 4 | 12.2066 |
| 5 | 12.20656 |
| 10 (digits) | 12.2065556157 |
149 has no perfect-square factor other than 1, so √149 is already in simplest radical form.
12.2066 × 12.2066 ≈ 149.0011, which is very close to 149.
Need another number? Use the square root calculator (also cube roots and other roots).
| Number | Square root |
|---|---|
| 145 | 12.0416 |
| 146 | 12.0830 |
| 147 | 12.1244 |
| 148 | 12.1655 |
| 150 | 12.2474 |
| 151 | 12.2882 |
| 152 | 12.3288 |
| 153 | 12.3693 |