Welcome to PercentageCalculatorBox.com — your trusted, free online destination for fast and accurate percentage calculations. From simple percentage math to advanced financial and academic computations, our tools are built for students, professionals, shoppers, and business owners alike.
Our mission is to make everyday math effortless. Whether you need to calculate a discount while shopping, determine GST or VAT on an invoice, find a percentage change in sales figures, or convert your CGPA to a percentage, we provide instant, browser-based results — no sign-up, no downloads, no ads interrupting your flow.
Below is a comprehensive guide to every percentage calculator available on this site. Click any calculator name to jump directly to it on the main calculators page.
Find what percentage one number is of another. Enter any two values and instantly get the third. Ideal for students calculating test scores, shoppers checking sale percentages, or anyone needing a quick percentage of a number.
Example: What is 25% of 200? → Answer: 50
Calculate the percentage increase or decrease between two values. Essential for tracking price changes, revenue growth, weight loss progress, or stock market movements.
Formula: ((New Value − Old Value) ÷ Old Value) × 100
Example: Sales grew from ₹10,000 to ₹13,500 → 35% increase
Quickly calculate the final price after a discount. Enter the original price and discount percentage to get the sale price and the amount saved. Perfect for online shopping, retail, and seasonal sales.
Example: ₹2,000 product at 30% off → You pay ₹1,400, saving ₹600
Compute GST-inclusive or GST-exclusive prices for any tax rate (5%, 12%, 18%, 28%). Widely used by Indian businesses for billing, invoicing, and accounting. Also works as a generic VAT/sales tax calculator.
Example: ₹5,000 product with 18% GST → Total price: ₹5,900
Determine your gross profit margin, markup percentage, and net profit for any product or service. Invaluable for entrepreneurs, retailers, and finance professionals setting competitive pricing strategies.
Formula: Profit Margin = ((Selling Price − Cost Price) ÷ Selling Price) × 100
Convert raw marks to a percentage score in seconds. Enter marks obtained and total marks to find your grade percentage. Useful for students, teachers, and parents reviewing academic performance.
Example: 425 out of 500 marks → 85%
Convert your CGPA to a percentage using the standard multiplier (×10 for most Indian universities). Many employers and graduate programs require percentage equivalents — this tool handles the conversion instantly.
Example: 8.5 CGPA → 85%
Convert any ratio or fraction to a percentage. Helpful in probability calculations, surveys, data analysis, and competitive exam preparation where ratios need to be expressed as percentages.
Example: 3:4 ratio → 75%
Percentage calculations are used daily in finance, education, shopping, and science. Here are the most common formulas you need to know:
All of the above formulas are built into our calculators so you never have to do the math manually. Try our free calculators now →
Have questions or suggestions? Feel free to contact us. We're continuously adding new tools based on user feedback.