Discount Inputs
Calculate a sale price, reverse a discount, or compare two stacked discounts.
Discount Calculator
Find sale prices, savings, original prices, and discount percentages
How It Works
Use the standard mode to find the savings and final price from an original price and percent off.
Reverse mode finds the original price from a sale price, while stacked mode applies two discounts one after the other rather than adding their percentages.
- Discount amount = original price x discount percentage.
- Sale price = original price - discount amount.
- Reverse original price = sale price / (1 - discount percentage).
- Stacked discounts apply sequentially to the remaining price.
Formulas
Discount amount = original price x discount %
Sale price = original price x (1 - discount %)
Original price = sale price / (1 - discount %)
Stacked final price = original price x (1 - discount 1) x (1 - discount 2)
Sale price
$80 with 25% off
$60 sale price and $20 savings
The percentage is applied to the original price.
Reverse discount
$72 after 10% off
$80 original price
Reverse calculations divide by the remaining percentage.
Stacked offers
$100 with 20% off, then 10% off
$72 final price, equal to 28% off
Sequential discounts are not the same as adding 20% and 10%.
Are two discounts added together?
No. Stacked discounts are applied one after another to the reduced price. A 20% discount followed by 10% is 28% total savings.
How do I find the original price?
Use Reverse mode and enter the sale price and discount percentage.
Can a discount be 100%?
A 100% discount produces a free item, but it cannot be reversed because the remaining percentage is zero.
Does this include sales tax?
No. Apply the discount to the price you want to compare, then add tax separately when appropriate.