How to Use the Exponent, Power & Nth Root Calculator
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Enter a base $x$ and an exponent $y$ to compute $x^y$.
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Or switch to "Nth Root" mode: enter radicand $x$ and root index $n$ to solve $\sqrt[n]{x} = x^{1/n}$.
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Supports positive, negative, and fractional exponents (e.g. $8^{2/3} = 4$).
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Inspect the step-by-step simplification and radical representation.
Practical Example & Use Case
Common Real-World Scenario
Calculating the 4th root of 625: $\sqrt[4]{625} = 625^{0.25} = 5$, because $5^4 = 625$.
Technical Notes & Limitations
Browser Engine Architecture
Calculates real-number solutions using high-precision IEEE 754 floating-point math.
Frequently Asked Questions
What does a negative exponent mean?
A negative exponent indicates the reciprocal of the base raised to the positive power: $x^{-n} = 1 / x^n$.