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Root Calculator

Calculate square roots, cube roots, nth roots, and powers instantly.

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Root Calculator Basics

Use this calculator to solve square roots, cube roots, nth roots, and powers without doing the exponent math manually.

For roots, the calculator uses x^(1 / n). For powers, it uses x^n. Negative numbers are supported for odd roots because those results are real numbers.

Square Roots

Enter degree 2 to find the square root. For example, the square root of 64 is 8.

Cube Roots

Enter degree 3 to find the cube root. For example, the cube root of 27 is 3.

nth Roots

Use any positive integer degree to calculate an nth root, such as a 4th root or 5th root.

Private Calculation

The calculation runs in your browser. Your input values are not sent to the server.

Frequently Asked Questions

A root asks which number can be raised to a power to produce the original number. For example, 8 squared is 64, so 8 is a square root of 64.
A square root is a number that becomes the original number when raised to the 2nd power. A cube root uses the 3rd power.
Yes, negative numbers can be calculated for odd roots. Even roots of negative numbers are not real numbers, so the calculator shows an error.
Yes. You can enter decimals such as 0.25, 2.5, or 12.75.

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