Percentage Calculator
What is X% of Y?
About This Tool
How to Use
- Select one of the three calculation modes using the tabs at the top.
- Enter the required numbers in the input fields.
- 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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