Calculate square roots, cube roots, nth roots, and any arbitrary root with full precision. Includes verification, simplification, and related calculations.
Calculate ⁿ√x
√x
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√x (square)
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∛x (cube)
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x² (squared)
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x³ (cubed)
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Enter a number to find its root
Supports square root, cube root, and any nth root.
Perfect Squares Reference
n
n²
n³
1
1
1
2
4
8
3
9
27
4
16
64
5
25
125
6
36
216
7
49
343
8
64
512
9
81
729
10
100
1000
Frequently Asked Questions
What is the square root?
The square root of x (written √x) is the number r such that r² = x. For example, √64 = 8 because 8² = 64. All positive numbers have two square roots: +r and −r.
Can you take the square root of a negative number?
Not in real numbers. √−1 = i (imaginary unit). Negative numbers have complex square roots. Only cube and odd-degree roots of negative numbers are real.