Percentage Calculator
Instantly calculate what percentage one number is of another. Enter your numbers below to get the percentage, see step-by-step explanations, and explore popular percentage calculations. Perfect for students, teachers, and anyone needing quick math help!
How to Calculate Percentages
To find what percentage X is of Y, use the formula:
Percentage = (X / Y) × 100
For example, if you scored 18 out of 20 on a test:
- Divide 18 by 20: 18 / 20 = 0.9
- Multiply by 100: 0.9 × 100 = 90%
So, 18 out of 20 is 90%.
Popular Percentage Calculations
15 out of 20
75%
18 out of 20
90%
16 out of 20
80%
7 out of 10
70%
25 out of 30
83.33%
50 out of 60
83.33%
12 out of 15
80%
30 out of 50
60%
45 out of 50
90%
Looking for a specific calculation? Try entering your own numbers above!
Frequently Asked Questions
What is a percentage?
A percentage is a way of expressing a number as a fraction of 100. It is denoted using the percent sign (%). For example, 50% means 50 out of 100.
How do I calculate a percentage?
To calculate what percentage one number is of another, divide the first number by the second, then multiply the result by 100.
What are percentages used for?
Percentages are used in many areas of life, including finance, education, statistics, and everyday comparisons. They help compare values and understand proportions.
Can I use decimals or negative numbers?
Yes, you can use decimals and negative numbers in the calculator. The result will show the correct percentage, even if it is negative or a decimal.