Calculate
How to use this calculator
Enter a base and an exponent. For whole-number exponents the answer is exact. For fraction or decimal exponents you get a decimal answer.
How it's calculated
aⁿ = a × a × … (n times). a⁻ⁿ = 1 ÷ aⁿ. a^(p/q) is the q-th root of aᵖ. Any non-zero number to the power 0 is 1.
Worked example
2 to the power 10 = 1,024. 2 to the power −3 = 1/8. 9 to the power 1/2 = 3.
Frequently asked questions
What does a negative exponent mean?
It means take the reciprocal: 2⁻³ = 1 ÷ 2³ = 1/8.
What is a fractional exponent?
The power 1/2 is a square root, 1/3 is a cube root, and so on.
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Last updated October 2026. Results are for learning and guidance; always check important work. Calculations run in your browser and are not stored.