Percentage Calculator - Calculate Percentages Online

Free Online Percentage Calculator

Our percentage calculator is a powerful, user-friendly tool designed to handle all your percentage calculations quickly and accurately. Whether you're calculating discounts, tax rates, grade percentages, or analyzing data trends, this calculator provides instant results with clear explanations.

What Can You Calculate?

Our percentage calculator supports four main types of calculations:

1. What is X% of Y?

Calculate a specific percentage of any number. Perfect for finding discounts, tips, or portions of a whole. For example, "What is 15% of 200?" gives you 30.

2. X is what % of Y?

Find what percentage one number represents of another. Ideal for calculating grades, completion rates, or market share. For example, "25 is what % of 200?" gives you 12.5%.

3. What number is X% more than Y?

Calculate a number that is a specific percentage larger than a base number. Useful for price increases, salary raises, or growth calculations. For example, "What number is 20% more than 100?" gives you 120.

4. Percentage Increase/Decrease

Determine the percentage change between two values. Essential for analyzing growth, decline, or comparing before and after values. For example, "From 100 to 120" shows a 20% increase.

How to Use the Calculator

Select Calculation Type: Choose from the dropdown menu which type of percentage calculation you need.
Enter Values: Input your numbers in the labeled fields. The labels change based on your selected calculation type.
Calculate: Click the "Calculate" button to get your result instantly.
Copy Result: Use the "Copy Result" button to copy your answer to the clipboard.
Clear: Reset all fields and start a new calculation.

Real-World Applications

This percentage calculator is useful in many scenarios:

Finance: Calculate interest rates, loan payments, and investment returns
Business: Determine profit margins, sales tax, and discount calculations
Education: Calculate grades, test scores, and academic progress
Statistics: Analyze data trends, survey results, and population changes
Personal: Calculate tips, discounts, and budget allocations

Mobile-Optimized Design

Our calculator is fully responsive and optimized for mobile devices. The number inputs are designed for easy touch interaction, and the interface adapts seamlessly to different screen sizes for the best user experience on smartphones and tablets.

Accuracy and Reliability

All calculations are performed using precise mathematical formulas to ensure accuracy. The calculator handles decimal numbers and provides results with appropriate precision. Error handling ensures you get clear feedback if invalid inputs are entered.

Frequently Asked Questions

How accurate are the percentage calculations?

Our calculator uses precise mathematical formulas and handles decimal numbers with high accuracy. Results are displayed with appropriate decimal places based on the calculation type.

Can I use this calculator on my mobile device?

Yes! The calculator is fully responsive and optimized for mobile devices. The number inputs are designed for easy touch interaction, and the interface adapts to different screen sizes.

What's the difference between percentage increase and "X% more than Y"?

Percentage increase calculates the change between two values (e.g., from 100 to 120 = 20% increase). "X% more than Y" calculates what number you get when you add X% to Y (e.g., 20% more than 100 = 120).

Can I copy the results to use elsewhere?

Yes! Click the "Copy Result" button to copy your calculation result to the clipboard. You can then paste it into any document, spreadsheet, or application.

What if I enter invalid numbers?

The calculator includes error handling and will display a clear message asking you to enter valid numbers if you input non-numeric values or leave fields empty.