Percentage Calculator

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This is one of several utilities. For the full list of utilities, see All tools.

Percentage Calculator is a free online utilities hosted on ToolzPedia. Calculate percentages, percentage change, what percent of a number, and reverse percentage problems instantly. The tool runs entirely in the browser and requires no account or installation.

Use the tool edit

How to use Percentage Calculator edit

Follow these steps to use the tool:

  1. Choose a mode

    Pick what you want to calculate: a percentage of a number, percent change, add/remove percentage, etc.

  2. Enter values

    Fill in the two numbers and click Calculate.

  3. Get the result

    See the exact answer along with the formula used.

Frequently asked questions edit

Use the "% of a Number" mode, enter 20 and 500. The answer is 100.
Use "% Change" mode and enter the old value and new value. If price went from 80 to 100, that is a 25% increase.
If a product costs $120 after a 20% increase, the reverse calculator tells you the original price was $100. Useful for backing out original prices from sale prices.
Results are shown to up to 6 significant decimal places. Trailing zeros are stripped for readability.

Other free utilities available on ToolzPedia:

See also edit