Free Percentage Calculator

Calculate percentages, percent change, discounts, and more. Fast, simple, and free.

Find a percentage of a number

Example: What is 15% of 240?

Find what percent one number is of another

Example: 36 is what percent of 240?

Calculate percentage change

Example: A value changes from 80 to 100.

Find the original number

Example: 80 is 20% less than what number?

Popular percentage calculators

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Percentage Increase Calculate how much a value has increased. Percentage DecreaseFind the percentage reduction between two values. Discount Calculator Find savings and sale price after a discount. Percentage Difference Compare two values without choosing a starting value. Original Price Calculator Work backward from a sale price and discount. Percentage Points Find the direct difference between two percentages.

Percent converters

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Decimal to Percent Convert a decimal value into a percentage. Percent to Decimal Turn a percentage into its decimal form. Fraction to Percent Convert a fraction into a percentage. Percent to Fraction Express a percentage as a simplified fraction. Basis Points to Percent Convert financial basis points to percentages. Ratio to Percent Convert a ratio or part-to-whole value into a percent.

Everyday calculators

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Sales Tax Calculator Add sales tax to a price or find the pre-tax amount. Tip Calculator Calculate a tip and split a restaurant bill. Discount Calculator Find savings and final price after a discount. Grade Calculator Calculate a grade percentage from points earned. Conversion Rate Calculator Calculate conversions as a percentage of visitors. Commission Calculator Calculate sales commission from a rate and total sales.

Percentage guides

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Simple tools for everyday percentage math

PercentConverter provides free calculators and explanations for common percentage problems: finding a percentage of a number, comparing values, calculating discounts, and converting between fractions, decimals, and percentages.