√143 ≈ 11.9583
√143 is an irrational number, so its decimals never end or repeat. It sits between 11 and 12 because 11² = 121 and 12² = 144.
| Decimal places | Value |
|---|---|
| 0 | 12 |
| 1 | 12.0 |
| 2 | 11.96 |
| 3 | 11.958 |
| 4 | 11.9583 |
| 5 | 11.95826 |
| 10 (digits) | 11.9582607431 |
143 has no perfect-square factor other than 1, so √143 is already in simplest radical form.
11.9583 × 11.9583 ≈ 143.0009, which is very close to 143.
Need another number? Use the square root calculator (also cube roots and other roots).
| Number | Square root |
|---|---|
| 139 | 11.7898 |
| 140 | 11.8322 |
| 141 | 11.8743 |
| 142 | 11.9164 |
| 144 | 12 |
| 145 | 12.0416 |
| 146 | 12.0830 |
| 147 | 12.1244 |