How do I use the Percentage Calculator?

Choose the type of percentage problem you want to solve, such as percentage of a number, reverse percentage, or percent change. Enter the known values into the matching fields and let the calculator update automatically. Read the result and use it for discounts, grade calculations, growth rates, or financial comparisons.

Is the Percentage Calculator free?

Yes, the Percentage Calculator is completely free. It runs entirely in your browser with no signup, no download, and no data sent to any server.

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calculator

Percentage Calculator

Solve percentage-of, reverse percentage, and percent change problems instantly with quick-pick shortcuts.

percentage calculatorpercent calculatorpercent change calculatorwhat is x percent of y

Common percentage math

Solve the most common percent problems instantly

Use quick picks for popular rates, then switch between percentage-of, reverse percentage, and percent change calculations.

Quick picks

Applies to X% of Y

Mode 1

What is X% of Y?

X (%) Y

Result

Mode 2

X is what % of Y?

X Y

Result

25%

Mode 3

% change from X to Y

From (X) To (Y)

Percent change

25% increase

Difference

Live summary

What is 20% of 250?

Answer

20% of 250 equals 50.

Type in any field and the results update instantly. The summary follows the last mode you interacted with.

How to use

How to Use the Percentage Calculator

1 Choose the type of percentage problem you want to solve, such as percentage of a number, reverse percentage, or percent change.
2 Enter the known values into the matching fields and let the calculator update automatically.
3 Read the result and use it for discounts, grade calculations, growth rates, or financial comparisons.

The Percentage Calculator solves common percentage questions like what is x percent of y, what percent one number is of another, and how much a value changed. It is a fast percent calculator for school, business, shopping, and everyday math.

If you need a percent change calculator, a reverse percentage calculator, or a quick online percentage calculator for work or study, this tool gives clear answers instantly in your browser.

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