Percentage Calculator
Calculate percentages instantly for discounts, tips, taxes, and more. Simple, fast, and accurate percentage calculations.
Formula:
Percentage Value = (Value × Percentage) / 100
What is a Percentage?
A percentage is a way of expressing a number as a fraction of 100. The word "percent" literally means "per hundred." Percentages are used everywhere in daily life - from calculating discounts and tips to understanding interest rates and statistical data.
Percentages make it easy to compare proportions and understand relative sizes. For example, saying "25% of customers" is more intuitive than saying "1 in 4 customers" or "0.25 of customers." This universal understanding makes percentages one of the most useful mathematical concepts.
The basic formula for finding a percentage of a number is: Percentage Value = (Value × Percentage) / 100. For example, 15% of 200 is (200 × 15) / 100 = 30.
Common Percentage Calculator Uses
Discounts & Sales
Calculate sale prices and savings. Find out how much you save with a 20% off coupon or what the final price is during a 30% discount sale.
Tips & Gratuity
Quickly calculate tips at restaurants. Find out what 15%, 18%, or 20% tip amounts to on your bill for fast and fair tipping.
Taxes & Fees
Calculate sales tax, VAT, or other percentage-based fees. Know the total cost before checkout by adding tax percentages to base prices.
Grade & Score Calculations
Convert raw scores to percentages. Find out what percentage you scored on a test or what grade corresponds to your points earned.
How to Use This Percentage Calculator
- Enter the value: Input the number you want to calculate a percentage of (e.g., $100).
- Enter the percentage: Input the percentage you want to calculate (e.g., 15 for 15%).
- View results: Instantly see the percentage value and the remaining amount after deduction.
- Apply to your scenario: Use the results for discounts, tips, taxes, or any other percentage calculation.
Frequently Asked Questions
How do you calculate a percentage of a number?
To calculate a percentage of a number, multiply the number by the percentage and divide by 100. For example, to find 20% of 500: (500 × 20) / 100 = 100. Our calculator makes this simple by automatically performing the calculation when you enter your values.
What is the percentage formula?
The basic percentage formula is: Percentage Value = (Value × Percentage) / 100. To find what percentage one number is of another: (Part / Whole) × 100. For percentage increase/decrease: ((New Value - Old Value) / Old Value) × 100.
How do I calculate a discount percentage?
To calculate a discount, multiply the original price by the discount percentage and divide by 100. For example, a 25% discount on $80 is: (80 × 25) / 100 = $20 off, making the final price $60. Use our calculator to quickly find discount amounts and final prices.
How do I calculate tip percentages?
To calculate a tip, multiply the bill amount by the tip percentage (typically 15-20%) and divide by 100. For a $50 bill with 18% tip: (50 × 18) / 100 = $9 tip. The total would be $59.
What's the difference between percentage and percentile?
Percentage represents a proportion out of 100 (e.g., 50% means half). Percentile represents a value's position in a dataset (e.g., 90th percentile means you scored higher than 90% of others). This calculator focuses on percentage calculations.