Percentage Calculator
Free online percentage calculator with 6 calculation modes. Calculate percentages instantly with step-by-step explanations for discounts, marks, growth, and more. Try our Fraction Calculator for converting fractions to percentages.
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Complete Guide to Percentage Calculations
Welcome to our comprehensive percentage calculator, the ultimate online tool designed to handle all types of percentage-based calculations. Whether you are a student calculating exam scores, a shopper figuring out discounts, or a business analyst determining growth rates, our versatile percentage calculator provides instant, accurate results with detailed step-by-step explanations. Understanding percentages is fundamental to mathematics, finance, education, and daily life decisions. Also check out our Grade Calculator for comprehensive academic performance tracking.
A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, “%”, or the abbreviations “pct.”, “pct”; sometimes the abbreviation “pc” is also used. A percentage is a dimensionless number (pure number); it has no unit of measurement. For example, 45% (read as “forty-five percent”) is equal to the fraction 45/100, the ratio 45:55 (or 45:100 when comparing to the whole), or 0.45 in decimal form. For converting between number formats, visit our Decimal to Fraction Converter.
What is Percentage?
Percentage means “per hundred” and represents a proportionate part of a total. The term comes from the Latin “per centum,” meaning “by the hundred.” Our percentage calculator helps you compute values without manual errors. Percentages are used extensively in finance for calculating interest rates, profit margins, and investment returns. Try our Compound Interest Calculator for advanced financial calculations.
Shopping & Discounts
Calculate sale prices during festive seasons like Black Friday or Diwali sales. Determine how much you save with percentage-off coupons. Our discount calculator instantly shows the final price after applying discount percentages, helping you make informed purchasing decisions and stay within budget. Use our Advanced Discount Calculator for complex multi-item discounts.
Education & Exams
Students and teachers use our percentage calculator to determine academic performance. Calculate overall percentages from multiple subjects, find required marks to achieve target percentages, or convert CGPA to percentage format. Essential for board exams, university admissions, and competitive test preparations. Check our CGPA Calculator for semester grade calculations.
Business Growth
Business professionals calculate profit margins, revenue growth, market share percentages, and employee performance metrics. Understanding percentage change is crucial for analyzing stock market trends, inflation rates, and economic indicators in corporate environments. For detailed profit analysis, use our Profit Margin Calculator.
Health & Fitness
Track your fitness journey by calculating weight loss percentage, body fat percentage, or calorie deficit percentages. Medical professionals use percentages to express risk factors, success rates of treatments, and nutritional information on food labels. Try our BMI Calculator for health metrics.
Daily Life Uses
From calculating tips at restaurants (typically 15-20%) to splitting bills among friends, percentages simplify daily mathematics. Even understanding weather forecasts (chance of rain percentage) or battery life indicators involves percentage concepts that our calculator makes easy to compute. Visit our Tip Calculator for restaurant bill splitting.
Related Calculators & Tools
- Fraction Calculator – Convert fractions to percentages easily
- Grade Calculator – Calculate weighted grades and final scores
- CGPA Calculator – Convert CGPA to percentage for all universities
- Discount Calculator – Calculate multiple discounts and final prices
- Compound Interest Calculator – Calculate growth with interest rates
- Profit Margin Calculator – Determine business profitability percentages
- Tip Calculator – Split bills and calculate tips
- BMI Calculator – Calculate body mass index percentages
How to Calculate Percentages
To calculate a percentage of a number, use the formula: (Part/Whole) × 100. For percentage increase or decrease: ((New Value – Original Value) / Original Value) × 100. Our percentage calculator automates these formulas, eliminating manual calculation errors and saving valuable time. Whether you need to find what percentage one number is of another, calculate percentage increase in salary, or determine discount amounts during sales, our tool handles all scenarios with precision. For complex mathematical operations, explore our Scientific Calculator.
For example, to calculate 20% of 150, you multiply 150 by 0.20 (or 20/100), giving you 30. To find what percentage 45 is of 90, divide 45 by 90 and multiply by 100, resulting in 50%. These fundamental operations form the basis of financial literacy and quantitative reasoning skills essential in modern life. Learn more about mathematical concepts with our Math Tools Collection.
Learn More About Percentages
- Understand the mathematical concept of percentage on Wikipedia
- Explore percentage change formulas and applications
- Learn about percentage calculations with interactive examples
- Discover financial mathematics and percentage applications
Frequently Asked Questions
Use our percentage change calculator: Subtract the original value from the new value, divide the result by the original value, and multiply by 100. For example, if price rises from ₹100 to ₹120, the increase is ((120-100)/100) × 100 = 20%. Check our detailed percentage change guide for more examples.
Yes, select the Discount mode. Enter the original price and discount percentage. The calculator shows both the discount amount and final price after discount, perfect for shopping during sales and offers. For bulk discounts, use our advanced discount calculator.
Absolutely. Our percentage calculator is 100% free to use without registration. All calculations happen instantly in your browser, and we don’t store your data. Browse all our free online calculators.
Use the Marks Percentage mode: Enter marks obtained and total marks. The calculator shows your percentage score immediately, useful for CBSE, ICSE, State Boards, and competitive exams. Also try our grade calculator for weighted scoring.
This finds a specific percentage of any number. For example, to calculate a 15% tip on a ₹2000 bill, enter 15% and 2000. The result is ₹300, which is the tip amount. Use our dedicated tip calculator for restaurant bills.