Percentage Calculator

What is X% of Y?

About This Tool

How to Use
  1. Select one of the three calculation modes using the tabs at the top.
  2. Enter the required numbers in the input fields.
  3. The result updates instantly as you type — no submit button needed.
Common Use Cases
  • Calculate a tip or discount percentage on a purchase
  • Determine what percentage a value is of a total
  • Find the percentage increase or decrease between two numbers
Tips & Tricks
  • Use the '% change' tab to quickly see growth rates between two periods.
  • All three modes work with decimal numbers, not just whole numbers.

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