ToolStack

Percentage Calculator

Calculate percentages in multiple modes: X% of Y, X is what % of Y, and percent change.

100% private — everything runs in your browser

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How to Use

  1. 1

    Choose a mode: X% of Y, X is what % of Y, or percent change.

  2. 2

    Type your two values — the result updates as you type.

  3. 3

    Read the answer in the Result panel.

Examples

What is 15% of 200?

Input

15 and 200

Output

30

50 is what percent of 200?

Input

50 and 200

Output

25

Percent change from 80 to 100

Input

80 and 100

Output

25 (an increase of 25%)

FAQ

Which mode should I use?

Use X% of Y for tips, discounts and taxes; X is ?% of Y to compare two numbers; % Change to measure an increase or decrease between two values.

Why is nothing shown for percent change?

Percent change needs a non-zero starting value — division by zero is undefined.

How accurate are the results?

Results are rounded to 4 decimal places for readability.

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