Percentage Calculator
Calculate percentages, increases, and decreases instantly.
What is
% of
?
increased by
% is?
decreased by
% is?
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Result
Free Online Percentage Calculator: 3-in-1 Tool
Percentages are everywhere—from calculating discounts and tips to analyzing growth rates and test scores. Our Percentage Calculator is a versatile 3-in-1 tool designed to solve the most common percentage problems instantly.
What Can You Calculate?
This tool handles three distinct types of calculations:
- Percentage of a Number: Find out what X% of Y is (e.g., "What is 20% of 150?").
- Percentage Increase: Calculate the new value after an increase (e.g., "Increase 100 by 5%").
- Percentage Decrease: Calculate the new value after a decrease (e.g., "Decrease 50 by 10%").
How to Use This Tool
- Choose Your Mode: Click the tabs to switch between "Percentage Of", "Increase", and "Decrease".
- Enter Values: Input your numbers into the clear, labeled fields.
- Instant Results: The answer appears immediately as you type—no need to click a button!
Real-World Examples
- Shopping: Calculate how much you save with a 25% discount.
- Tipping: Figure out a 15% or 20% tip on your restaurant bill.
- Finance: Determine the final price after tax or the growth of an investment.
Frequently Asked Questions (FAQ)
How do I calculate a percentage of a number?
To calculate X% of Y, simply multiply Y by X and divide by 100. Or use our 'What is % of?' tab for an instant answer.
How do I calculate percentage increase?
To increase a number by a percentage, multiply the number by (1 + percentage/100). Our 'Increase by %' tab does this automatically.
Is this calculator free?
Yes, this Percentage Calculator is completely free and works instantly in your browser.