What is 20% of 80?
20 percent of 80 is 16. Try other numbers in the calculator below.
20% of 80
16
How to work out 20% of 80
- Turn the percentage into a decimal: 20 ÷ 100 = 0.2.
- Multiply by the number: 0.2 × 80 = 16.
Mental-math shortcut: Divide by five, or take 10% twice. (1% of 80 is 0.8, so 20% is 0.8 × 20 = 16.)
20% of 80 is 16. On an $80 bill this is a 20% tip; as a discount it brings $80 down to $64. One fifth of 80.
Percentages of 80
20% of other numbers
Method & sources
Pure arithmetic: X% of Y = Y × X ÷ 100. Results are calculated exactly and rounded only for display, so the reference tables and the calculator always agree.
Page last updated: October 1, 2026
Frequently asked questions
What is 20% of 80?
20% of 80 is 16. To get it, divide 20 by 100 to make 0.2, then multiply by 80.
How do you calculate 20 percent of a number?
Convert the percentage to a decimal by dividing by 100 (20% becomes 0.2), then multiply by the number. Shortcut: divide by five, or take 10% twice.
16 is what percent of 80?
16 is 20% of 80 — dividing 16 by 80 and multiplying by 100 gives 20. This is the reverse of the calculation on this page.
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