Percentage Calculator
Calculate percentages, increases, decreases, and ratios with ease. Perfect for business, finance, and everyday calculations.
Percentage Calculator
Enter values to calculate various percentage operations
Quick Examples:
Tip Calculation: Value: 50, Percentage: 15% = $7.50 tip
Discount: Value: 100, Percentage: 20% = $20 off
Tax: Value: 200, Percentage: 8.5% = $17 tax
Calculation Results
Detailed breakdown of percentage calculations
Enter values above to see calculation results
Business Calculations
Markup: Cost × (1 + %)
Margin: (Price - Cost) / Price
ROI: (Gain - Cost) / Cost
Growth Rate: (New - Old) / Old
Financial Calculations
Interest: Principal × Rate × Time
Tax: Amount × Tax Rate
Tip: Bill × Tip Percentage
Discount: Price × Discount %
Academic Calculations
Grade: (Points / Total) × 100
Change: (New - Old) / Old × 100
Ratio: Part / Whole × 100
Proportion: A / B = C / D
Percentage Calculation Tips
Common scenarios and how to calculate them
Common Scenarios:
Restaurant Tip: Bill: $45, Tip: 18% = $8.10 tip, Total: $53.10
Sale Discount: Price: $120, Discount: 25% = $30 off, Final: $90
Tax Calculation: Amount: $500, Tax: 8.5% = $42.50 tax, Total: $542.50
Business Examples:
Profit Margin: Cost: $80, Sell: $120 = 33.3% margin
Growth Rate: Old: $1000, New: $1200 = 20% growth
Markup: Cost: $50, Markup: 40% = $70 selling price