Free percentage calculators
Find a percentage, compare changes, reverse a calculation or work out a discount. Six free tools with clear formulas, worked examples and instant results.
Find what a percentage of a number equals. Enter the rate and number to get the amount, decimal factor and remainder.
Open calculator →Calculate what percentage a part represents of a whole, with the ratio and remainder shown.
Open calculator →Calculate percentage increase or decrease from a starting value to a new value, with the signed change and multiplier.
Open calculator →Compare two nonnegative values using their average as the reference. The result is symmetric when you swap the values.
Open calculator →Find the original whole when you know a percentage amount and the percentage it represents.
Open calculator →Find the discount amount, sale price and final price with optional tax applied after the discount.
Open calculator →See the formula, example and calculation breakdown.
Compare prices, grades, measurements and business figures.
No account. Calculations run on your device.
Find a percentage, compare changes, reverse a calculation or work out a discount. Six free tools with clear formulas, worked examples and instant results.
Keep the same units for both values. Amounts have no assumed currency.