Discount calculator
Calculate a sale price and savings, or find the discount percentage from two prices.
Your numbers
Currency changes the label only. No exchange-rate conversion.
Your result
How to use this calculator
Choose your calculation, then enter the original price and either the discount percentage or sale price. A sale price cannot exceed the original price in this discount tool.
Formula and example
Sale price = original price × (1 − discount ÷ 100). A price of 500 with 20% off becomes 400, saving 100. To find the percentage, use (original − sale) ÷ original × 100.
Before you buy
Shipping, fees and extra taxes are not added automatically. Two successive discounts must be applied in order; 20% then 10% is a total 28% discount.
Read the full worked-example guide
Calculations run in your browser. No account needed. Money is displayed to two decimal places; percentage conversions are approximate when rounded.