Compute discount amount and final price instantly.
The Discount Calculator solves three retail and pricing scenarios: finding the sale price when you know the original price and discount percentage; finding what discount percentage was applied when you know both prices; and working backwards to find the original price from a discounted price and discount rate. It also handles stacked discounts — where a 20% member discount is applied on top of a 30% sale — which cannot be added together (a 20% then 30% stack equals 44% combined, not 50%).
Stacked discounts apply sequentially, each to a different base. A 30% sale then a 20% member discount on $100: first gives $70, then 20% off $70 gives $56. The combined discount is 44%, not 50%.
It depends on the price. A 20% off coupon beats a $20 off coupon when the item costs more than $100. Below $100, $20 off wins. At exactly $100, they are equal.
Use Original = Sale Price ÷ (1 − Discount/100). If an item is $63 after 30% off: $63 ÷ 0.70 = $90 original price.