Percentages are an important part of both math and daily life. We deal with percentages all over the place... Calculating tips, 50% off sales, sales tax, or (dare I mention it in April?) income taxes. All of these areas work with percentages. This percentage calculator easily allows you to convert a percent to fraction or, in reverse, a fraction to percent. By playing with the various values, you can work out various types of problems ("what percent of a number is some other number" for example), and the spoken-word version of various types of problems is shown in the preview. Working various problems through the calculator will quickly build experience with various types of percentage problems. Also be sure to check out the various fraction and percentage math worksheets on the site for more practice. Percentage Calculator