Percentage Calculator
Calculate a percentage of a number, what percent one number is of another, a percentage increase or decrease, or the percentage difference between two numbers.
Enter your numbers
Result
Enter numbers and calculate to see the result here.
How it works
Pick the kind of percentage calculation you need, enter your two numbers, and select Calculate. "X% of Y" answers questions like "what is 20% of 150?". "X is what % of Y" answers "30 is what percent of 200?". Percentage increase or decrease shows how much a value changed from X to Y, as a percentage. Percentage difference compares two numbers relative to their average, regardless of which one is larger. All calculations run locally in your browser.
Is this percentage calculator free?
Yes, it's completely free and runs entirely in your browser -- no sign-up needed.
Does it store the numbers I enter?
No. All calculations happen locally in your browser. Nothing you type is sent to a server.