Percentage Calculator
Calculate percentages instantly with our free online tool. Features multiple calculators: basic percentage, reverse percentage finder, percentage change, discount calculator, markup calculator, and tip calculator. Perfect for business, finance, shopping, and everyday use.
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💡 Tip: This percentage calculator provides multiple modes for different calculations. Switch between tabs to access various percentage-related tools for business, finance, and everyday use!
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Choose Calculator Type
Select from six calculator modes: percentage of a number, reverse percentage finder, percentage change, discount calculator, markup calculator, or tip calculator.Enter Your Values
Input the numbers you want to calculate. Each calculator has specific fields tailored to its purpose (e.g., original price and discount percentage).Get Instant Results
Results are calculated automatically as you type. No need to click a calculate button - just enter your values and see the answer immediately.View Detailed Breakdown
See not just the final result, but also a breakdown of the calculation, including savings, profit, or change amounts where applicable.Copy or Clear
Copy the result to your clipboard with one click, or clear all fields to start a new calculation.
Tips & Tricks
Business Pricing Strategy
Use the markup calculator to set retail prices. Common retail markups range from 50% (groceries) to 100-200% (clothing and jewelry). Calculate your selling price to ensure profitability.
Smart Shopping with Discounts
Compare multiple discounts quickly. A 20% discount on $100 saves $20, while 30% off $80 saves $24. Use the discount calculator to find the best deals when shopping.
Restaurant Tipping Guide
Standard tips in the US: 15% for adequate service, 18-20% for good service, 20%+ for excellent service. Use quick tip buttons for common percentages.
Track Investment Performance
Use percentage change calculator to track stock returns, real estate appreciation, or savings growth. A stock that rises from $50 to $65 shows a 30% increase.
Salary Negotiations
Calculate raise percentages to compare offers. A $5,000 raise on a $50,000 salary is 10%, while the same raise on $60,000 is 8.33%. Know your worth!
Sales Tax Calculations
Use the basic percentage calculator for sales tax. If sales tax is 8% and item costs $50, the tax is $4 (8% of $50), making the total $54.
Grading and Test Scores
Calculate exam grades using reverse percentage. If you got 42 out of 50 questions correct, that's 84% (42 is 84% of 50). Track your academic performance easily.
Budget Allocation
Use percentages to budget: 50% needs, 30% wants, 20% savings. On a $4,000 monthly income, that's $2,000, $1,200, and $800 respectively. Calculate with the basic percentage tool.
Frequently Asked Questions
How do I calculate what percentage one number is of another?
Use the "X is what % of Y" calculator. Enter the part (X) and the total (Y). For example, to find what percentage 25 is of 200, enter 25 as the part and 200 as the total. The result is 12.5%.
What's the difference between discount and markup?
Discount reduces a price (selling for less than original), while markup increases a cost (selling for more than you paid). A 20% discount on $100 gives $80, while a 20% markup on $100 cost gives $120 selling price.
How is percentage change calculated?
Percentage change = ((New Value - Original Value) / Original Value) × 100. If a stock rises from $50 to $60, that's ($60-$50)/$50 × 100 = 20% increase. Our calculator shows whether it's an increase or decrease.
Can I calculate reverse percentages?
Yes! Use the "X is what % of Y" calculator to find what percentage one number represents of another. This is useful for grades, statistics, and analyzing proportions.
How do I calculate a discount price?
Enter the original price and discount percentage in the Discount calculator. For example, a $80 item with 25% discount shows final price ($60) and savings ($20) automatically.
What's a good markup percentage for retail?
Typical retail markups: 50% for groceries, 100% for furniture, 100-200% for clothing, 200-400% for jewelry. Use the markup calculator to determine selling prices that cover costs and ensure profitability.
How much should I tip at restaurants?
In the US: 15% for adequate service, 18-20% for good service, 20-25% for excellent service. Use our tip calculator with quick buttons for common percentages (10%, 15%, 18%, 20%, 25%).
Can this calculator handle decimal percentages?
Yes! You can enter decimal percentages like 12.5% or 33.33%. All calculators support decimal inputs for precise calculations, useful for interest rates, tax rates, and detailed financial calculations.
How do I calculate percentage increase or decrease?
Use the Percentage Change calculator. Enter the original value and new value. The calculator automatically determines if it's an increase (green) or decrease (red) and shows both the percentage and absolute change.
Are my calculations saved anywhere?
No, all calculations happen in your browser locally. We don't store or transmit your data to any server. Your financial calculations remain completely private on your device.