Percentage Calculator

Calculate percentages, increases and decreases instantly.

What is X% of Y?
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X is what % of Y?
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% increase from X to Y?
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% decrease from X to Y?
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Tips
  • "What is 20% of 500?" → Enter 20 and 500 → Result: 100.
  • "15 is what % of 60?" → Enter 15 and 60 → Result: 25%.
  • Percent increase: From 80 to 100 = 25% increase.

What is Percentage Calculator?

A percentage calculator is an online tool that computes percentage-based values instantly, including what percentage one number is of another, percentage increase or decrease between two values, and the result of applying a percentage to a given number. Percentages are used across finance, retail, education, nutrition, and statistics. A percentage calculator online eliminates manual formula errors and delivers accurate results for both simple and complex percentage problems within seconds.

How to Use Percentage Calculator

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Basic percentage of a number: Multiply the number by the percentage and divide by 100. Example: 20 percent of 250 equals 50
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What percentage is X of Y: Divide X by Y, then multiply by 100. Example: 40 out of 200 equals 20 percent.
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Percentage increase: Subtract the original value from the new value, divide by the original, then multiply by 100.
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Percentage decrease: Subtract the new value from the original, divide by the original, then multiply by 100.
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Open a percentage calculator online, select the calculation type, and enter your values into the relevant fields.
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The result appears instantly. Cross-check with a second calculation type if you need to verify the figure from a different angle.

Why Use Percentage Calculator?

Speed: Results appear in under one second, which is critical when working with financial data under time pressure
Accuracy: Manual percentage calculations are among the most common sources of arithmetic error. A calculator removes this risk entirely.
Versatility: One tool handles percentage of a value, percentage difference, and percentage change within a single interface.
Educational value: Seeing the formula and result together teaches users how to calculate percentage independently over time.
Finance and retail use: Discount calculations, VAT, profit margins, and interest rates all rely on fast and reliable percentage computation.
Device accessibility: A percentage calculator online works on smartphones, tablets, and desktops without any download requirement.

Frequently Asked Questions

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