How do I 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, 20% of 150 = (150 × 20) / 100 = 30. Our calculator does this automatically for you.

How do I calculate percentage change?

Percentage change is calculated using the formula: ((New Value - Original Value) / Original Value) × 100. A positive result indicates an increase, while a negative result indicates a decrease.

What is the difference between percentage and percentile?

A percentage represents a portion of 100, while a percentile indicates a value below which a certain percentage of data falls. For example, being in the 90th percentile means you scored higher than 90% of the group.

Can I use this calculator for discounts and tips?

Absolutely! Our percentage calculator is perfect for calculating sale discounts, tips, tax amounts, and any other real-world percentage calculations you need.

Free Online Percentage Calculator - Calculate Percentages Instantly

Q: What is a percentage calculator?

A percentage calculator is a tool that helps you perform various percentage calculations quickly and accurately. It can find what percentage one number is of another, calculate a percentage of a number, find percentage increase or decrease, and solve other percentage-related problems.

What is % of ?

Quick Reference

10% of 100 = 10

25% of 200 = 50

50% of 80 = 40

15% of 300 = 45

What is a Percentage Calculator?

A percentage calculator is a mathematical tool that helps you perform various percentage-related calculations quickly and accurately. Percentages represent a fraction of 100 and are used extensively in finance, statistics, academics, and everyday life. Our free online percentage calculator supports five common calculation types: finding a percentage of a number, determining what percentage one number is of another, calculating percentage change between two values, and computing increases or decreases by a specific percentage. This versatile tool eliminates manual calculations and reduces the risk of errors.

How to Use This Percentage Calculator?

1

Select Calculation Type

Click on one of the tabs to choose your calculation: "% of Number", "What %?", "% Change", "Increase by %", or "Decrease by %".

2

Enter Your Values

Type in the required numbers. Each calculation mode has clearly labeled input fields showing what values are needed.

3

View Instant Results

Results appear automatically as you type. No need to click a calculate button.

4

Use Quick Reference

Check the quick reference section for common percentage calculations and verify your understanding.

Common Questions

Free Online Percentage Calculator Tool

Our free online percentage calculator simplifies all types of percentage calculations for students, professionals, and anyone who needs quick, accurate results. Whether you're calculating discounts while shopping, determining grade percentages, analyzing financial data, or computing tax amounts, this tool handles it all.

The calculator offers five essential modes: Find what a percentage of a number equals (e.g., 20% of 150), determine what percentage one number is of another (e.g., 30 is what % of 120), calculate percentage change between values (useful for comparing prices or growth), and compute new values after percentage increases or decreases (essential for markup/markdown calculations).

All calculations happen instantly in your browser with complete privacy. For more conversion tools, explore our unit converter or try the currency converter for international conversions. Visit our full utility tools collection for more helpful calculators.

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