Percentage Calculator
Calculate percentages, increases, decreases, and changes
All calculations happen in your browser. Your data never leaves your device and is not sent to any server.
Select Calculation Type
Input
Result
Enter values above
Examples
Basic Percentage:
20% of 500 = 100
What Percentage:
25 is 12.5% of 200
Increase:
200 + 15% = 230
Decrease:
200 - 15% = 170
Change:
From 100 to 150 = +50%
Tip Calculator:
$50 + 20% = $60
About Percentage Calculator
Percentage Calculator helps you perform common percentage calculations quickly and accurately with detailed formulas.
Calculation types:
- % of Value: Calculate what X% of Y equals
- What %: Find what percentage one number is of another
- Increase: Increase a value by a percentage
- Decrease: Decrease a value by a percentage
- % Change: Calculate percentage change between two values
Use cases: Shopping discounts, salary increases, tax calculations, tip calculations, sales analysis, grade calculations, financial planning