A radical is another way to write a root, like square root or cube root.

Can it handle nth roots?

Yes. You can choose the root degree and compute square roots, cube roots, and more.

What if the value is negative?

Real-number roots of negative values are limited. Some odd roots can be real, but even roots of negatives are not real.

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Radical Calculator

Find square roots and nth roots.

ValueRoot Degree

Result

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Expression

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Comprehensive Guide

A radical calculator computes square roots, cube roots, and other nth roots. That is useful when you need to simplify an expression, measure growth in reverse, or undo a power operation. Radicals are one of the core building blocks of algebra.

If the value is 81 and the root degree is 2, the answer is 9. If the degree is 3, the cube root is 4.3267... for 81. Changing the degree changes the meaning of the result, so the calculator keeps the root clear.

Real-World Examples

Radicals show up in geometry, area formulas, and physics calculations. They are also useful when you want a precise root instead of a rough mental estimate. The calculator gives you the exact numerical output in one step.

Because some negative inputs do not have real even roots, the calculator can also help you spot invalid combinations quickly.

Reference Table

Value	Root	Result
81	2	9
27	3	3
16	4	2

Frequently Asked Questions

What is a radical?

Another name for a root expression.

Can it do cube roots?

Yes. Set the root degree to 3.

What about negatives?

Even roots of negative numbers are not real.

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