Square Root Calculator › Square root of 393
Square Root of 393
√393 ≈ 19.824228
393 is not a perfect square, so √393 is an irrational number that is approximately 19.824228. In simplified radical form, √393 = √393.
√393 lies between √361 = 19 and √400 = 20.
| Number | 393 |
| Square root (decimal) | 19.824228 |
| Simplified radical | √393 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 393 a perfect square?
No, 393 is not a perfect square, so its square root is irrational and approximately 19.824228.
What is the square root of 393 in simplest radical form?
√393 = √393 in simplest radical form.