How it works
The nth root of a is b when bⁿ = a. Use square, cube, or general root modes. Real roots only.
ⁿ√a = b ⇔ bⁿ = a
When to use
Use this tool when you need to: pick Square, Cube, or General root. Even roots need a non-negative radicand; results show the principal root and ± when both are real.
How to use this tool
- Enter your values in the fields above.
- Review the formula and any mode options for your problem.
- Read the result and the step-by-step solution.
Pick Square, Cube, or General root. Even roots need a non-negative radicand; results show the principal root and ± when both are real.
Frequently asked questions
- What is the Root Calculator?
- The nth root of a is b when bⁿ = a. Use square, cube, or general root modes. Real roots only.
- How do I use the Root Calculator?
- Enter the required values, then calculate. The Root Calculator shows results, formulas, and step-by-step work when available. No account is required.
- What formula does the Root Calculator use?
- ⁿ√a = b ⇔ bⁿ = a
- Percentage CalculatorSolve percentage proportion, common phrases, difference, and percent change.
- Percent Error CalculatorCompare an observed value to a true value and get absolute, relative, and percent error.
- Ratio CalculatorSolve A:B = C:D, simplify ratios, and enlarge or shrink by a factor.
- Rounding CalculatorRound numbers by place precision, fraction units, or significant figures — with multiple rounding modes.
- Exponent CalculatorSolve base^exponent = result for any missing value — with optional base e and exponent laws.
- Fraction CalculatorAdd, subtract, multiply, divide, simplify, and convert fractions and mixed numbers.
Browse categories