X Is What Percent of Y?
Got 18 out of 24 on a quiz? Want to know what share of a budget one expense takes? Enter X (the part) and Y (the whole) to get the percentage instantly.
X is what percent of Y?
Results update as you type.
- 18 is this percent of 24
- 75%
- Fraction
- 18/24 = 0.75
Steps
- 18 ÷ 24 = 0.75
- 0.75 × 100 = 75%
Worked example
Example: 11 out of 15 as a percentage
- Divide: 11 ÷ 15 = 0.7333…
- Multiply by 100: 73.33%
11 is 73.33% of 15.
Formula
Percent = X ÷ Y × 100
Common scores: 12/20 = 60%, 15/20 = 75%, 18/20 = 90%, 21/25 = 84%, 24/30 = 80%, 27/30 = 90%, 13/15 = 86.67%, 4/5 = 80%.
Frequently asked questions
What percent is 12 out of 20?
12 ÷ 20 = 0.6, and 0.6 × 100 = 60%.
What percent is 13 out of 15?
13 ÷ 15 = 0.8667, so it is about 86.67%.
Can X be bigger than Y?
Yes — the answer is then over 100%. 30 is 150% of 20.
Last reviewed October 17, 2026 · Calculations run in your browser; nothing you enter is sent to a server.