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How to use
- 1Enter a value, choose square, cube or nth root and provide N when needed.
About
Even roots of negative values are rejected because they have no real result.
Root calculator
Calculate a square root, cube root or Nth root with a decimal result.
The Nth root of x is x^(1/n).
Enter a value and choose square, cube or Nth root. Even roots of negative values are not real.
The result is the number that, raised to the selected order, rebuilds the original value.
Practical examples
- √81 = 9, ∛-27 = -3 and the fourth root of 16 = 2.
Limitations and notes
- An Nth-root order must be an integer of at least 2.
- Use valid values and keep all units consistent.
How to use
- 1Enter the value.
- 2Choose the root type.
- 3Review the decimal result.
Frequently asked questions
Does a cube root accept a negative value?
Yes. Odd roots preserve the negative sign.
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