Free Online Percentage Calculator
Calculate percentages, discounts, tips, percentage changes, and more with our comprehensive calculator. Features 7+ calculation types, dark mode support, and mobile-friendly design.
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How to Calculate Percentage of a Number
Calculating a percentage of a number is one of the most common mathematical operations used in daily life. Whether you're calculating a tip, a discount, or a tax, knowing how to find a percentage is essential.
The Formula
Step-by-Step Guide
- 1Convert the percentage to a decimal by dividing it by 100 (e.g., 20% becomes 0.20).
- 2Multiply this decimal by the number you want to find the percentage of.
- 3The result is your answer.
Real-World Examples
Sales Tax
You need to calculate 8% sales tax on a $50 purchase.
Test Score
You got 85% on a test with 60 questions. How many did you get right?
💡 Pro Tips
- •To find 10% of any number, simply move the decimal point one place to the left.
- •To find 1% of any number, move the decimal point two places to the left.
- •To find 50%, simply divide the number by 2.
Calculator Features
Percentage of Number
Calculate what percentage of a number equals another number (e.g., 20% of 100)
What Percent Of
Find what percentage one number is of another (e.g., 25 is what % of 100?)
Percentage Change
Calculate percentage increase or decrease between two values
Discount Calculator
Calculate final price after applying percentage discounts
Tip Calculator
Calculate tip amounts and total bill with tip included
Mobile Friendly
Responsive design works perfectly on all devices and screen sizes
How to Use the Percentage Calculator
- Select calculation type: Choose from the dropdown menu what type of percentage calculation you need
- Enter values: Input the numbers using the calculator keypad or type directly
- Get results: The calculator automatically displays the result with a detailed explanation
- Try different calculations: Switch between calculation types to explore different percentage problems
Percentage Knowledge Hub
Deep dive into the world of percentages. Learn about their history, practical applications in finance, and common misconceptions.
The History of Percentages
The concept of percentages dates back to ancient Rome. Discover how the symbol evolved from 'per cento' to the modern % sign we use today.
Percentages in Personal Finance
Master the 50/30/20 budgeting rule, understand the difference between APR and APY, and learn how compound interest can work for you.
Common Percentage Mistakes
Don't confuse percentage points with percentage change. Learn the 3 most common math errors that even professionals make.
What Our Users Say
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"The best site for calculating percentages! Super easy and practical to use. I’ll be using it every day!"
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"was just tryna work out a discount lol this worked perfect"
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