Percentage Calculator

Work out any percentage in seconds: a percentage of a number, what percent one number is of another, and percentage increase or decrease.

Calculations happen entirely in your browser.

How to use Percentage Calculator

  1. Choose a calculation type.
  2. Enter the values.
  3. The result appears instantly.

About this tool

Percentages show up everywhere — tips, discounts, tax, grades, statistics. This calculator covers the three most common cases, so you never have to remember the formulas.

Frequently asked questions

How do I calculate percentage change?
Choose “Percentage change” and enter the old and new values. The result is (new − old) ÷ old × 100.

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