Percentage
Calculator
The fastest, most beautiful way to calculate percentages online. Instant results, zero hassle.
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Three powerful tools for every percentage calculation you'll ever need.
Percentage of a Number
What Percent Is It?
Increase / Decrease
How It Works
Understanding percentages in three simple formulas.
Percentage of a Number
Find what a specific percentage of any number is. For example, 25% of 200 = 50.
What Percent Is It?
Determine what percentage one number is of another. For example, 20 is 40% of 50.
Percentage Change
Calculate the percentage increase or decrease between two values.
Visual Percentage Guides
See percentages come alive with interactive visual diagrams.
Pie Chart Visualization
Visualize how a percentage represents a portion of the whole. Here, 75% fills three-quarters of the circle.
Progress Comparison
Compare multiple values as percentages side-by-side. Track progress, targets, and performance metrics.
Percentage Change
Visualize how values change from one period to another. See the increase or decrease as a clear percentage shift.
Common Percentage Reference
Quick reference table for frequently used percentage calculations.
| Fraction | Decimal | Percentage |
|---|---|---|
| 1/2 | 0.5 | 50% |
| 1/3 | 0.333 | 33.3% |
| 1/4 | 0.25 | 25% |
| 1/5 | 0.2 | 20% |
| 1/8 | 0.125 | 12.5% |
| 1/10 | 0.1 | 10% |
| 2/3 | 0.667 | 66.7% |
| 3/4 | 0.75 | 75% |
| 4/5 | 0.8 | 80% |
| 7/8 | 0.875 | 87.5% |
Frequently Asked Questions
Everything you need to know about percentages.
What is a percentage?
A percentage is a way of expressing a number as a fraction of 100. It is commonly used to represent a portion of a whole or to compare two numbers. Percentages are often denoted with the symbol "%". For example, if there are 100 cars in a garage and 25 of them are white, we could say that 25% of the cars in the garage are white.
How do you calculate a percentage?
To calculate a percentage, you typically divide the part (the smaller value) by the whole (the larger value), and then multiply the result by 100. This gives you the percentage value as a number between 0 and 100. For example, if you have 50 apples and 20 of them are red, you would divide 20 by 50 to get 0.4, then multiply by 100 to get 40%.
Why do percentages matter?
Percentages are used in a wide variety of contexts, from calculating discounts and taxes to measuring changes in stock prices and economic indicators. Understanding how percentages work can help you make more informed decisions in areas from personal finance to business management.
What is the formula for percentage increase?
The formula for percentage increase is: ((New Value − Old Value) ÷ Old Value) × 100. For example, if a product's price goes from $50 to $65, the percentage increase is ((65 − 50) ÷ 50) × 100 = 30%. A negative result indicates a percentage decrease.
How do I convert a fraction to a percentage?
To convert a fraction to a percentage, divide the numerator (top number) by the denominator (bottom number), then multiply by 100. For example, 3/4 as a percentage is (3 ÷ 4) × 100 = 75%. This works for any fraction — simply perform the division and multiply the decimal result by 100.
What is the difference between percentage and percentile?
A percentage is a portion out of 100 and measures a part of a whole. A percentile, however, indicates a value below which a certain percentage of data falls. For example, if you score in the 90th percentile on a test, you scored higher than 90% of test takers. They are related but serve different purposes.