Math Calculators
Exponent Calculator
Raise any base to a positive, negative or decimal exponent.
Free foreverRuns in your browserNo sign-up
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256
About the Exponent Calculator
An exponent tells you how many times a base is used as a factor. For example, 2 to the power of 8 equals 256.
This calculator supports positive and negative exponents, zero powers and decimal exponents. Negative exponents produce reciprocals, while decimal exponents can represent roots.
Results update as you type and are calculated locally in your browser, with scientific notation used automatically for very large or very small answers.
Key features
- Positive, negative and decimal exponents
- Automatic scientific notation
- Instant live results
- Private browser-based calculation
How to use
- 1Enter the base number.
- 2Enter the exponent or power.
- 3Read the result as it updates automatically.
Frequently asked questions
- What does a negative exponent mean?
- A negative exponent takes the reciprocal. For example, 2^-3 is 1 divided by 2^3, which equals 0.125.
- What is any non-zero number to the power of zero?
- Any non-zero number raised to the power of zero equals 1.
- Can the exponent be a decimal?
- Yes. A decimal exponent is supported, although some negative-base decimal powers do not have a real-number result.