√30 ≈ 5.4772
√30 is an irrational number, so its decimals never end or repeat. It sits between 5 and 6 because 5² = 25 and 6² = 36.
| Decimal places | Value |
|---|---|
| 0 | 5 |
| 1 | 5.5 |
| 2 | 5.48 |
| 3 | 5.477 |
| 4 | 5.4772 |
| 5 | 5.47723 |
| 10 (digits) | 5.4772255751 |
30 has no perfect-square factor other than 1, so √30 is already in simplest radical form.
5.4772 × 5.4772 ≈ 29.9997, which is very close to 30.
Need another number? Use the square root calculator (also cube roots and other roots).
| Number | Square root |
|---|---|
| 26 | 5.0990 |
| 27 | 5.1962 |
| 28 | 5.2915 |
| 29 | 5.3852 |
| 31 | 5.5678 |
| 32 | 5.6569 |
| 33 | 5.7446 |
| 34 | 5.8310 |