📊 Percentage Calculator ✨ Free

Calculate percentages, discounts, markups, and more

Calculate Percentage of a Number

Percentage (%)

Of Number

Formula: (Percentage / 100) × Number = Result

Discount Calculator

Original Price ($)

Discount (%)

Formula: Original Price - (Original Price × Discount / 100) = Final Price

Markup Calculator

Cost Price ($)

Markup (%)

Formula: Cost Price + (Cost Price × Markup / 100) = Selling Price

Percentage Change Calculator

Old Value

New Value

Formula: ((New Value - Old Value) / Old Value) × 100 = % Change

Tip Calculator

Bill Amount ($)

Tip Percentage (%)

Formula: Bill Amount × (Tip % / 100) = Tip Amount

Tax Calculator

Price Before Tax ($)

Tax Rate (%)

Formula: Price + (Price × Tax Rate / 100) = Total Price

🎯 Professional Percentage Calculator

Calculate percentages quickly and accurately with our comprehensive percentage calculator. Handle discounts, markups, tips, taxes, and percentage changes with ease. Perfect for shopping, business, finance, and everyday calculations.

📊 Calculator Types

Basic Percentage: Find what percentage of a number equals another number
Discount Calculator: Calculate sale prices and savings amounts
Markup Calculator: Determine selling prices from cost and markup percentage
Percentage Change: Find increase or decrease between two values
Tip Calculator: Calculate tips and total bill amounts
Tax Calculator: Add sales tax to prices and find total amounts

💡 Common Uses

Shopping: Calculate discounts, sales prices, and total costs with tax
Business: Determine profit margins, markups, and pricing strategies
Finance: Calculate interest rates, investment returns, and financial ratios
Restaurants: Calculate tips and split bills accurately
Education: Solve percentage problems and understand mathematical concepts
Real Estate: Calculate commission rates and property value changes

📐 Percentage Formulas

Basic Percentage: (Percentage ÷ 100) × Number = Result
Percentage of Total: (Part ÷ Total) × 100 = Percentage
Percentage Change: ((New - Old) ÷ Old) × 100 = % Change
Discount Price: Original Price - (Original Price × Discount ÷ 100)
Markup Price: Cost + (Cost × Markup ÷ 100)
Tax Inclusive: Price + (Price × Tax Rate ÷ 100)

💰 Calculation Tips

Double Check: Always verify your calculations, especially for financial decisions
Round Appropriately: Round to appropriate decimal places for currency
Understand Context: Know whether you're calculating increase, decrease, or simple percentage
Use Decimals: Enter 0.5 for half a percent, not 50
Check Units: Ensure you're using the correct currency or measurement units

🔒 Privacy & Security

Your calculation data is completely private. This percentage calculator operates entirely in your browser using JavaScript. No calculation data is sent to external servers, collected, or stored. All computations are performed locally for maximum privacy.