What is 18% of 100?
18% of 100 = 18
100 × 18/100 = 18
How to calculate 18% of 100
Multiply 100 by 18 and divide by 100: 100 × 18 ÷ 100 = 18. Equivalent shortcut: 100 × 0.18 = 18.
As a discount
A 18% discount on a 100 purchase saves you 18, so you pay 82. Stacking more discounts? Use the Discount & Tax Calculator — stacked discounts multiply, they don't add.
Related percentages
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