Work out any sale price in seconds
Whether you are shopping a Black Friday deal, pricing items to resell, or just checking whether a “50% off” sign is really a bargain, this calculator does the math instantly across six common discount types.
Six ways to calculate a discount
Choose percent off (the classic 20% off), amount off (a flat sum like $15 off), BOGO (buy-one-get-one offers), stacked (one discount applied after another), reverse (find the original price from the sale price), or cashback (your effective price after a rebate).
Why stacked discounts surprise people
Stacking a 20% coupon on top of a 10% sale does not equal 30% off. The second discount applies to the already-reduced price, so the real saving is about 28%. This calculator handles the order correctly — which is exactly where mental math tends to slip.
Don’t forget tax and quantity
Add a sales-tax rate to see the final amount you will actually pay at the register, and set a quantity to total a multi-item purchase — handy for stocking up during a sale.
How do I calculate percentage discount?
Enter the original price and the discount percentage — the calculator instantly shows the sale price, amount saved, and optionally the total after tax.
What is a stacked discount?
Stacked discounts apply multiple percentage discounts in sequence. For example, 20% off then an additional 10% off is not 30% off — it's an effective 28% off. This calculator shows the real effective discount.
How does the reverse discount calculator work?
If you know the sale price and the discount percentage, the reverse calculator works backwards to find the original price. Useful for finding the original price of clearance items.
What does BOGO mean?
BOGO stands for Buy One Get One. The calculator supports BOGO free, Buy 2 Get 1 Free, Buy 1 Get 2nd 50% Off, and Buy 3 Get 1 Free — showing the effective discount for any quantity.
How is cashback different from a discount?
With cashback you pay full price upfront and receive a portion back later. This calculator shows your effective cost after cashback and the equivalent discount percentage.