Percentage Calculator
Free online Percentage Calculator.
Calculator
How to Use
- Enter the required values
- Click Calculate to see the result
- Review the detailed output
Formula
Percentage = (Part / Whole) x 100. To find part: Part = (Percentage x Whole) / 100. Percentage change = ((New - Old) / |Old|) x 100.
Example Calculations
Find Percentage
Input: What is 25% of 200?
Result: 50
Percentage Of
Input: 30 is what % of 150?
Result: 20%
Percentage Change
Input: Change from 80 to 100
Result: 25% increase
About This Calculator
Free online percentage calculator. Calculate instantly in your browser with our easy-to-use tool. No sign-up required.
Our percentage calculator is free, easy to use, and provides instant results. All calculations are performed in your browser for privacy and speed.
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Frequently Asked Questions
How do I calculate a percentage?
Multiply the number by the percentage and divide by 100. For example, 20% of 150 = 30.
What percent is one number of another?
Divide the first by the second and multiply by 100. For example, 25 is 12.5% of 200.
How do I calculate percentage change?
Subtract original from new, divide by original, multiply by 100. Positive is increase, negative is decrease.
Easiest way to calculate a tip?
Find 10% of the bill and add half for 15%, or double it for 20%.
Real-life uses of percentages?
Percentages appear in discounts, taxes, interest rates, grades, nutrition labels, and statistics.