Percentage Calculator
Our free percentage calculator handles the most common percentage problems. Just enter your numbers and get instant, accurate results.
What is X% of Y?
% of
Enter values above to see the result.
X is what percent of Y?
is what % of
Enter values above to see the result.
X is Y% of what number?
is
Enter values above to see the result.
How to Use This Percentage Calculator
A percentage represents a fraction of 100. For example, 25% means 25 out of 100, or one quarter. Our calculator above covers three fundamental question types:
- What is X% of Y? Finds the portion that corresponds to a given percentage of a total. Example: what is 20% of 150? Answer: 30.
- X is what percent of Y? Calculates what percentage one number is relative to another. Example: 30 is what percent of 200? Answer: 15%.
- X is Y% of what number? Solves for the whole when you know a part and its percentage. Example: 30 is 15% of what number? Answer: 200.
All calculations happen directly in your browser — no data is sent to any server.