Percentage Calculator
Calculate percentages, increases, decreases, and more. Perfect for discounts, taxes, tips, and statistics.
Choose Calculation Type
What Percent
What percentage is X of Y?
Result
Enter values and click calculate to see the result
Common Percentage Calculations
Shopping
- • Discount calculations
- • Sales tax additions
- • Tip calculations
- • Price comparisons
Finance
- • Interest rates
- • Investment returns
- • Loan calculations
- • Inflation adjustments
Statistics
- • Grade calculations
- • Survey results
- • Growth rates
- • Market share
Percentage Tips
Quick Mental Math
- 10% = divide by 10
- 20% = divide by 5
- 25% = divide by 4
- 50% = divide by 2
- 75% = multiply by 3/4
Common Formulas
- Percentage = (Part ÷ Whole) × 100
- Part = (Percentage × Whole) ÷ 100
- Increase = Original × (1 + %/100)
- Decrease = Original × (1 - %/100)