Work out any percentage — of a number, as a share, or as a change.
Result
30
Formula
15% × 200 ÷ 100 = 30
15% of 200
The most common question
1530 out of 200
Express a part as a percentage
30Change from 100 to 150
Percentage increase
150Percentage of a number, a share of a total, a change between two values, or adding and removing a percentage.
The answer updates as you type — there is no calculate button to press.
The working is shown beneath the result, so you can verify it or learn the method.
Percentage questions come in several shapes, and using the wrong one is the usual cause of a wrong answer. Switching mode makes the difference explicit.
Seeing 15 ÷ 100 × 200 next to the answer means you can repeat it mentally next time, rather than needing the tool again.
Percentage change from zero is undefined rather than infinite, and the tool says so instead of showing a meaningless number.
Five percentage calculations in one place, because "percentage" means five different things depending on what you are trying to work out. Find a percentage of a number, express one number as a percentage of another, measure the change between two figures, or add and subtract a percentage from a value. Each mode shows the formula alongside the answer, so you can check the method and repeat it yourself next time rather than coming back.
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