Understand the calculation
A percentage of a percentage is found by converting one percentage to a decimal and multiplying it by the other percentage.
PercentWise performs the arithmetic in your browser. Your calculator inputs are not sent to our server by the calculator itself.
Example30% of 40%
0.30 × 40% = 12%
Example50% of 18%
0.50 × 18% = 9%
Using the result
Check that the values and percentage rate match the question you are trying to answer. For important financial, tax, payroll or academic decisions, verify any required rates or rules with the relevant official source.