Math
Exponent Calculator
Use the exponent calculator to evaluate base raised to a power and understand how negative or fractional exponents behave.
Try an example
Result
Power
—
- Reciprocal
- —
Student quick launch
Grade planning, algebra checks, and formulas students reach for most.
Study path
Use this calculator with
Follow these when you want the formula behind the answer, a short lesson, or nearby tools in the same topic.
What the exponent calculator solves
Use the The small raised number saying how many times to multiply the base by itself. calculator to evaluate The number being raised to a power, or the side a shape's height is measured from. raised to a power and understand how negative or fractional exponents behave.
Formula
How to use it
- Enter the base.
- Enter the exponent.
- Check the warning if the exponent is zero, negative, or decimal.
How to read the answer
Positive exponents grow repeated multiplication. Negative exponents create The number you get by flipping a fraction; 3/4 becomes 4/3, and 5 becomes 1/5., so the same base and opposite exponent land on opposite sides of 1.
Common mistakes and edge cases
- 0^0 is an indeterminate form in many contexts.
- Negative bases with fractional powers may leave the real-number system.
- A negative exponent does not make the answer negative by itself.
Worked examples
Positive exponent
Power
256
Negative exponent
Power
0.04
Frequently asked questions
What does a negative exponent mean?+
It means take the reciprocal of the matching positive power.
Can this calculate roots?+
Yes for positive bases: a fractional exponent such as 1/2 is a square root, 1/3 is a cube root, and so on.
About this calculator
- Written by
- mathcheck editorial team
- Last reviewed
- May 8, 2026
Method
- Uses the values entered by the user and stable formulas documented on the page.
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Last updated: May 8, 2026