Square Root Calculator
Find square roots and nth roots of any number.
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Square Root Calculator
Find the square root of any non-negative number.
Result
Cannot compute — negative input
Square Root
Perfect Square?
Squared Back
Enter a non-negative number, then press Calculate.
How square roots work
- Square root — the number that, when multiplied by itself, gives the original number.
- Perfect square — a number whose square root is a whole integer (e.g. 16 → 4).
Example: √144 = 12 (perfect square), √2 ≈ 1.4142 (not perfect).