Calculating a tip to figuring out a grade average or a price discount, percentage calculations show up constantly in everyday life — and doing them quickly and accurately in your head isn’t always easy. This all-purpose percentage calculator solves the most common percentage problems instantly, whether you’re finding what percent one number is of another, calculating a percentage increase, or working out a percentage of a total.
All-Purpose Percentage Calculator
Solve any percentage calculation instantly, from portions to increases and proportions.
Proportion Breakdown Summary
Calculation Steps & Details
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This tool pairs naturally with a lot of the other calculators on this site — check out our tip calculator if you’re specifically splitting a restaurant bill, or our discount calculator if you’re shopping a sale. Our guide on U.S. tipping etiquette also walks through one of the most common real-world uses of percentage math.
Enter your numbers above to solve any percentage problem instantly, whatever the context.