Percentage Calculator
Four common percentage problems. Results stay in this tab.
What is X% of Y?
X is what percent of Y?
Percent change from A to B
Increase / decrease Y by X%
About Percentage Calculator
Work out percentages online with this free percentage calculator: find the percent of a number, the percentage one value is of another, percent change, and percentage increase or decrease. It helps with discounts, tax, tips, markups, grades, KPI reporting, and growth between two figures. Enter your numbers and the answer appears instantly with the formula applied so you can trust the direction of the change.
Shoppers compute a discount off a price. Students compute exam percentages. Analysts compute percent change from last month. Business owners compute markup versus margin-style questions at a high level. Percent of and percent change are different operations; this tool keeps them separate so a 20 percent increase is not confused with 20 percent of a number.
Type the values, read the result, and copy it into a sheet or message. You do not need a spreadsheet for a one-off. The calculator does not add hidden fees; it only does the percentage math you asked for. Pair it with the unit converter when the numbers are measurements, or with the date calculator when the question is time rather than percent.
All calculation happens in your browser with nothing sent to a server. Financial figures you type stay private. Use this free percentage calculator, percent change calculator, and discount calculator whenever you need instant, private percent math.