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Math & Numbers / Free online tool

Exponent Calculator

Raise a base to a power and inspect the resulting real number.

Your inputs

More options & settings
Try a worked example

2 to the power −3 equals 0.125.

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Starting values are examples. First click or keyboard focus clears an example so you can enter yours. Reset restores the examples.

Your result

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Compare scenarios

Keep up to three results and their inputs during this visit. Reset clears the comparison.

Behind the answer

Result = base ^ exponent

How to use this calculator

A positive exponent multiplies the base repeatedly for integer exponents. Negative powers take the reciprocal. Solve a missing exponent using logarithms, or find a real base/root from the exponent and result. For positive results and even integer exponents both signed real roots are listed.

  1. Enter find, base, exponent and review the remaining options.
  2. Select Calculate or change a value to update the result. Read the result label and units before copying.
  3. Use Reset to restore the worked starting values.

Formula and method

Result = base ^ exponent

Some negative-base fractional powers have no real result. Zero to a nonpositive power is rejected.

Worked example

2^10 = 1,024.

Questions about exponent calculator

What does a negative exponent mean?

For a nonzero base, a negative exponent gives a reciprocal: 2^−3 = 1/8 = 0.125. Zero to a nonpositive exponent is rejected. This tool returns finite real results rather than complex numbers.

What assumptions should I check?

Some negative-base fractional powers have no real result. Zero to a nonpositive power is rejected.

Are my inputs saved?

Calculations run in your browser. We store only tool IDs for favorites and recent tools. A calculation link contains your inputs only when you explicitly choose to copy one.