Square Root Calculator › Square root of 15
Square Root of 15
√15 ≈ 3.872983
15 is not a perfect square, so √15 is an irrational number that is approximately 3.872983. In simplified radical form, √15 = √15.
√15 lies between √9 = 3 and √16 = 4.
| Number | 15 |
| Square root (decimal) | 3.872983 |
| Simplified radical | √15 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 15 a perfect square?
No, 15 is not a perfect square, so its square root is irrational and approximately 3.872983.
What is the square root of 15 in simplest radical form?
√15 = √15 in simplest radical form.