Percentages

Every percentage tool in one place: calculators for percent of a number, increase, decrease, discounts, tax, and tips, plus worksheets and practice.

A percentage is a number out of 100, used for discounts, scores, taxes, tips, and price changes. This hub gathers every percentage tool on the site so you can jump straight to the one you need.

Start with the percentage calculator for the common questions, use the increase and decrease calculators for change over time, and reach for the discount, tax, and tip calculators for everyday money. Worksheets and a problem generator are here for practice.

Calculators Percentage Calculator Calculate percentages, find what percent one number is of another, or work backward from a percentage. Calculators Percentage Increase Calculator Find the percentage increase from an original value to a new larger value. Calculators Percentage Decrease Calculator Find the percentage decrease from an original value to a new smaller value. Calculators Average Percentage Calculator Find the average of several percentages, or a weighted average where some count more. Shows the steps. Calculators Grade Calculator Turn a test score into a percentage and letter grade, or find the marks needed for a target. Shows the steps. Calculators Discount Calculator Find the sale price and how much you save, add sales tax, or stack two discounts, all from the original price and percent off. Calculators Sales Tax Calculator Add sales tax to a price or remove it from a total. Shows the tax amount and the steps. Calculators Tip Calculator Work out the tip and total for any bill, and split it between people. Shows the steps. Calculators Fraction to Percent Calculator Convert a fraction to a percent by dividing and multiplying by 100. Shows the steps. Calculators Percent to Fraction Calculator Convert a percent to a fraction in simplest form, with the mixed number and the steps. Calculators Percent Error Calculator Find the percent error between a measured value and the true value. Shows the formula and steps. Worksheets Percentage Worksheets Print percentage practice with basic percent questions, percent change problems, word problems, and answer keys. Problems Percentage Problems With Answers Practice percentage problems with answers, including easy, medium, word, and challenge questions. Generators Percentage Problem Generator Generate printable percentage problems with an answer key for quick practice.

Frequently asked questions

How do I calculate a percentage of a number?

Multiply the number by the percent divided by 100. For 20% of 80: (20 / 100) x 80 = 16. The percentage calculator handles this and the reverse questions.

What is the difference between percentage increase and decrease?

Both compare a change to the original value. Increase is used when the value goes up, decrease when it goes down; each has its own calculator here.

How do I convert between fractions and percentages?

Use the fraction to percent calculator (divide and multiply by 100) or the percent to fraction calculator (write over 100 and simplify).