Percentage Calculator – Calculate Percentages, Discount, Profit & More
Percentage Calculator
Use our free percentage calculator to calculate percentages, percentage increases and decreases, discounts, profit and loss, marks percentage, percentage difference, and more.
Percentage Calculator
Simple, fast and free percentage calculations
Calculate a Percentage of a Number
Find a percentage of any number.
What Percentage Is One Number of Another?
Find what percentage one number represents of another.
Percentage Increase or Decrease
Calculate the percentage change between two values.
Discount Calculator
Calculate your discount amount and final price.
Profit or Loss Percentage
Calculate profit or loss percentage from cost and selling prices.
Find the Original Number
Find the original number when a percentage value is known.
Percentage Difference
Compare two values using percentage difference.
Add a Percentage
Increase a number by a specific percentage.
Subtract a Percentage
Decrease a number by a specific percentage.
Marks Percentage Calculator
Calculate exam, test, assignment, or subject percentage.
Tax / GST Calculator
Add a percentage-based tax, GST, VAT, or other charge to a value.
Reverse Tax Calculator
Find the original price before a percentage-based tax was added.
Recent Calculations
How Do Percentages Work?
A percentage represents a number as a fraction of 100. The word percentage literally means "per hundred." Percentages are commonly used for discounts, taxes, interest, exam scores, statistics, business calculations, price changes, and financial comparisons.
For example, 25% means 25 out of 100, or 25/100. This can also be written as 0.25 in decimal form.
Percentage Formula
The basic percentage formula is:
To find a percentage of a number, divide the percentage by 100 and multiply it by the number.
Percentage Examples
What is 20% of 500?
What percentage is 25 of 100?
What is a 20% increase from 500?
What is a 20% discount on 1,000?
Final price = 1,000 − 200 = 800
Common Percentage Values
| Percentage | Decimal | Fraction |
|---|---|---|
| 10% | 0.10 | 1/10 |
| 20% | 0.20 | 1/5 |
| 25% | 0.25 | 1/4 |
| 50% | 0.50 | 1/2 |
| 75% | 0.75 | 3/4 |
| 100% | 1.00 | 1 |
Percentage Increase vs. Percentage Difference
Percentage increase or decrease normally uses the original value as the reference point. Percentage difference instead compares two values using their average. These are different calculations and should not be confused.
Where Are Percentages Used?
- Shopping discounts and sale prices
- Taxes, GST and VAT calculations
- School and university examination marks
- Business profit and loss
- Salary increases and decreases
- Statistics and data analysis
- Interest and financial calculations
- Price increases and decreases
Frequently Asked Questions
How do I calculate a percentage?
Divide the part by the total and multiply the result by 100. For example, 25 out of 100 is (25 ÷ 100) × 100 = 25%.
How do I calculate 10% of a number?
Divide the number by 10. For example, 10% of 500 is 50.
How do I calculate a percentage increase?
Subtract the original value from the new value, divide by the original value, and multiply by 100.
How do I calculate a discount?
Multiply the original price by the discount percentage divided by 100. Subtract the resulting discount amount from the original price to get the final price.
How do I calculate exam marks percentage?
Divide the marks obtained by the total marks and multiply by 100. For example, 450 out of 500 equals 90%.
Can I use this calculator on a mobile phone?
Yes. The calculator is designed to work on desktop, tablet, and mobile screens.
About This Percentage Calculator
This free online percentage calculator provides several common percentage calculations in one place. It can help with everyday mathematics, shopping discounts, price changes, school marks, business calculations, taxes, and other percentage-based problems.
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