Percentage Calculator
Enter both numbers to see the result.
About this percentage calculator
This free percentage calculator handles the three most common percentage questions in one place. Use it to find a percent of a number (for example 20% of 150), to find what percentage one value is of another (30 is what percent of 150), and to calculate percentage increase or decrease between an old and a new value. The result updates as you type, right in your browser, with no sign-up and no cost.
Percentages come up everywhere: discounts and sales tax, tips, exam scores, interest, and statistics. Doing the math by hand is easy to get wrong, so this tool keeps it quick and accurate.
How to use it
Pick the calculation type from the menu, enter the two numbers, and read the answer. The field labels change to match the calculation you chose so you always know what to type.