Exponent CalculatorFree online math calculator — instant results, no sign-up
Raise a base to any power.
Sign in to save results and favorites.
About the Exponent Calculator
The Exponent Calculator computes the result of raising a base number to a specified power or exponent. It is widely used by students, engineers, scientists, and programmers to evaluate powers, calculate exponential growth, and simplify mathematical expressions.
- Base
- The number being multiplied repeatedly by itself, which can be positive, negative, or fractional.
- Exponent
- The power to which the base is raised, which can be positive, negative, zero, or a decimal.
Formula and method
Result = b^e
- bBase number
- eExponent (power)
- ResultThe base multiplied by itself e times (or its mathematical equivalent for negative and fractional powers)
The calculator evaluates the power using standard exponentiation (b raised to the power e). The computed value is formatted to a maximum of 10 decimal places for display.
Worked example
These are the calculator's starting values and the results it actually produces for them.
Inputs
- Base2
- Exponent10
Results
- Result1,024
How to use the Exponent Calculator
- 1Enter the base value b into the Base input field.
- 2Enter the power value e into the Exponent input field.
- 3The tool raises the base to the power of the exponent (b^e).
- 4View the computed power displayed under Result, rounded to up to 10 decimal places.
Reading your result
The result displays the numerical value of b^e. For a positive integer exponent, it represents multiplying the base by itself e times; for a negative exponent, it represents 1 divided by the base raised to the positive exponent.
Limitations
The calculator uses standard 64-bit floating-point arithmetic, meaning values exceeding approximately 1.79e+308 overflow to Infinity. It does not compute complex numbers, so raising a negative base to a non-integer exponent results in NaN.
Common questions
What happens when the exponent is zero?+
Any non-zero base raised to the power of zero equals 1 (for example, 5^0 = 1). In standard JavaScript arithmetic, 0^0 also evaluates to 1.
How do negative exponents work?+
A negative exponent indicates the reciprocal of the base raised to the positive exponent. For example, 2^(-3) equals 1 / (2^3) = 1/8 = 0.125.
Can I use fractional or decimal exponents?+
Yes. A fractional exponent represents a root; for example, an exponent of 0.5 represents the square root (9^0.5 = 3), provided the base is not negative.
Does the calculator save my information?+
Calculations run in your browser. While signed in, inputs and results are automatically recorded in account history; saving a result creates a separate saved record.
Further reading
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Results are estimates for informational purposes and are not financial, medical or legal advice.