What is 15% of 100?
15% of 100 is 15.
- Answer
- 15
- As a fraction
- 3/20 of 100
- 100 + 15%
- 115
- 100 − 15%
- 85
How to calculate it
- 15% = 15 ÷ 100 = 0.15
- 0.15 × 100 = 15
Shortcut: Take 10% (10) and add half of that again (5): 10 + 5 = 15. This is the classic restaurant-tip trick.
As a tip: a 15% tip on a $100 bill is $15, making the total $115.
15% of other amounts
Other percentages of 100
Need a different number? Use the percentage calculator for any percent of any amount, percentage change, or “what percent is A of B”.
Frequently asked questions
What is 15% of 100?
15% of 100 is 15, because 15/100 × 100 = 0.15 × 100 = 15.
How do I work out 15 percent of a number?
Divide 15 by 100 to get 0.15, then multiply the number by 0.15. 15% is the same as the fraction 3/20, so you can also multiply by 3 and divide by 20.
What is 100 plus 15%?
100 + 15% = 100 × 1.15 = 115. And 100 minus 15% = 100 × 0.85 = 85.