Discount Calculator
What is a Discount Calculator?
A discount calculator instantly works out the final price of an item after one or more discounts, and shows exactly how much you save. It is perfect for sales, coupons, clearance racks and Black Friday deals.
Enter the original price and the discount percentage. You can optionally add a second "stacked" discount - for example a 20% off sale plus an extra 10% coupon. The calculator returns the final price, the amount saved, and the effective discount percentage off the original price.
Frequently Asked Questions
How do you calculate the discounted price?
Final price = original price × (1 - discount%). For a $100 item at 20% off: 100 × 0.8 = $80. Your savings are $20. For stacked discounts, apply each discount one after the other rather than adding the percentages.
How do stacked discounts work?
Stacked discounts are applied sequentially, not added. A 20% discount plus a 10% discount is not 30% off: 100 × 0.8 = 80, then 80 × 0.9 = $72, which is 28% off in total. This calculator applies them in the correct order automatically.
What is the difference between discount and sales tax?
A discount reduces the price before tax, while sales tax is added on top of the (discounted) price. To find the total you actually pay, use the discount calculator to get the discounted price, then the sales tax calculator to add tax.