Exponent Calculator – Calculate Powers Online
Raise a base to a power and see powers of two bases side by side.
About the Exponent Calculator
What is the Exponent Calculator?
An exponent calculator raises a base to an integer power and lets you compare two bases under the same exponent.
Why use this calculator?
Powers model area growth, compound interest, oxidation states and much more. Comparing same-exponent powers reveals how bases scale them.
How to use it
- Enter a base and an exponent.
- Add a second base to compare.
- Read the result, the comparison and a powers table.
Formula
x^n with integer n; negative exponents give reciprocals.
Very large results switch to scientific notation for readability.
Frequently Asked Questions
What does a negative exponent mean?
It means 1 divided by the positive power, e.g. 2^−3 = 1/8.
What is any number to the power 0?
Any nonzero number to the power 0 equals 1. 0^0 is undefined in most contexts.
What order of operations does this use?
It follows standard PEMDAS/BODMAS rules: parentheses, exponents, multiplication and division, then addition and subtraction.
How precise are the answers?
The calculator uses double-precision floating-point math (about 15 significant digits) and rounds the display. For exact symbolic results use dedicated algebra software.
Can I enter negative numbers or decimals?
Yes. Negative values, decimals and very large or small numbers are all supported unless a field says otherwise.
What does it mean if I get an error?
Errors usually mean an invalid input, such as division by zero or a negative value where only positives make sense. Check your entries and try again.
Is this calculator free to use?
Yes. Every calculator on this site is completely free, with no hidden fees, no subscriptions and no limits on how many times you can use it.
How accurate are the results?
We use standard, widely accepted formulas and calculate in your browser using double-precision arithmetic. Results are rounded for readability, so treat them as reliable estimates rather than a guarantee. Real-world factors can vary the true figure.
Can I add this calculator to my own website?
Yes. Open this calculator page and use the "Add to your website" box in the sidebar to copy a ready-made iframe snippet, then paste it into any HTML page.
Does it work on a phone or tablet?
Yes. The layout is fully responsive, so it works on desktops, laptops, tablets and mobile phones, and every input adapts to touch screens.