Percentage Calculator
Calculate percentages instantly and accurately with our free online calculator. Perfect for students, professionals, and anyone working with percentages in their daily life.
Please select the type of percentage calculation you need:
How to Calculate Percentages
Our percentage calculator simplifies complex calculations into three easy-to-use tools:
1. Basic Percentage Calculation
To find X% of Y:
Result = (X × Y) ÷ 100
Example: 15% of 200 = (15 × 200) ÷ 100 = 30
2. Percentage Ratio
To find what percent X is of Y:
Result = (X ÷ Y) × 100
Example: 30 is what % of 200 = (30 ÷ 200) × 100 = 15%
3. Original Value Calculation
To find the original number when X is Y% of it:
Result = (X × 100) ÷ Y
Example: 30 is 15% of what number = (30 × 100) ÷ 15 = 200
Common Applications
- Calculate discounts and sales prices
- Determine tax amounts
- Calculate interest rates
- Analyze business metrics and growth rates
- Calculate academic grades and scores