Percentage Calculator is a free online tool to calculate percentages.

Tips: Use tab to move to the next field. Use shift-tab to move to the previous field. Press enter to calculate.

About

This website is designed to help you quickly and easily calculate percentages for a variety of purposes. Whether you're calculating discounts, calculating tips, or trying to figure out how much something has increased or decreased in value, our percentage calculator can help.

FAQ

What is a percentage?

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 you want to know what percentage of them are red, and 20 of them are red, you would divide 20 by 50 to get 0.4, then multiply by 100 to get 40%.

Why 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 a variety of areas, from personal finance to business management.

How do you calculate percentage change?

Percentage change is calculated using the formula: ((New Value − Old Value) ÷ Old Value) × 100. For example, if a price rises from $80 to $100, the percentage increase is ((100 − 80) ÷ 80) × 100 = 25%. Use the percentage increase/decrease calculator above to get the result instantly.

How do I calculate a tip using percentages?

Use the “What is X% of Y?” calculator above. Enter the tip percentage (e.g. 15) and the total bill amount. The result is the tip amount. For a $60 dinner with a 20% tip: 20% of 60 = $12.

What is the difference between percentage and percentage points?

A percentage point is the arithmetic difference between two percentages. If an interest rate rises from 2% to 5%, that is a 3 percentage point increase — but a 150% relative increase. The distinction matters in finance, statistics, and journalism.

How do I find what percentage one number is of another?

Divide the first number by the second and multiply by 100. For example, 30 is what percent of 150? (30 ÷ 150) × 100 = 20%. Use the “X is what percent of Y?” calculator above for instant results.

How do I calculate a percentage discount?

To find the discount amount, use the “What is X% of Y?” calculator: enter the discount percentage and the original price. For a 30% discount on a $250 item: 30% of 250 = $75 off, so you pay $175.