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Answer the three most common percentage questions in one place.
How the calculation works
Choose a question type: what is X% of Y, X is what percent of Y, or X is Y% of what number. Enter the two values and the answer appears instantly.
Formula used
X% of Y = X ÷ 100 × Y; X is what % of Y = X ÷ Y × 100
Example
20% of 150 is 30, and 30 is 20% of 150.
Frequently asked questions
How do I add a percentage to a number?
Multiply the number by (1 + percent ÷ 100).
Can percentages exceed 100?
Yes. 150% of 80 is 120.
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Results are estimates for general information only and are not professional financial, medical or legal advice.