Percentage Calculator

Clean answers to everyday percent questions.
Theme
Calculations
What percentage is X of Y?
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What is X% of Y?

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How much did X change compared to Y?
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Examples

Everyday percentage calculations

Percentages are used constantly in daily life. You might calculate a tip at a restaurant, apply a discount while shopping, estimate tax, measure a price increase, or compare changes over time. They make it easy to see how one value relates to another.

Common everyday uses include calculating a 10% or 15% tip, finding how much you save during a sale, comparing price changes, or checking growth or loss in values such as expenses, grades, or performance.

As examples, this calculator answers questions like “What is a 15% tip of 56?” or “What is 21% tax of 249.99?”

How percentage calculations work

A percentage expresses a number as a part of 100. Common calculations include finding what percentage one value is of another, calculating a percentage of a number, and measuring percentage increase or decrease between two values.

These calculations are widely used in finance, education, statistics, shopping, and everyday decision-making. Click any result to copy it instantly.

FAQ
Yes. All calculations update as you type. There is no “calculate” button, keeping everything quick, clean, and effortless.
When a value would produce an invalid calculation—such as dividing by zero—the related input field becomes gently highlighted after a short delay. This helps prevent mistakes without interrupting your typing flow.
Simply click or tap any result box. The value is copied instantly to your clipboard, ready to be pasted wherever you need it.
Yes. The calculator fully supports large numbers and decimal values. Thousands are formatted automatically as you type or paste them, keeping results clear and easy to read.
This calculation shows how much X represents out of Y, expressed as a percentage. It is often used to compare values, measure progress, or understand proportions.
This operation tells you the exact amount represented by a percentage of a number. It is useful for discounts, taxes, tips, increases, and many everyday calculations.
Percentage change measures how much a value has increased or decreased relative to the original number. It is calculated by subtracting the old value from the new value, dividing the result by the absolute value of the old number, and multiplying by 100.
A dash appears whenever a calculation cannot be completed—for example, if one or both fields are empty, or if the input would create a mathematically invalid result.
Many real-world values include decimals or fall below zero. Allowing these inputs ensures that the calculator remains accurate and useful in all scenarios, not only whole numbers.
Automatic formatting improves readability and reduces mistakes when working with large numbers. The formatting does not affect the calculation—it only makes the input clearer.
Yes. The tool works well for common financial tasks such as interest, discounts, markups, growth percentages, and comparisons. It provides precise results instantly.
No. All calculations happen directly in your browser. Nothing is saved, sent, or processed on a server, ensuring full privacy and security.