Discount Calculator
Work out the final price after a discount (including stacked discounts), how much you save, or what percent off a sale price actually is.
Applied to the already-discounted price — '25% + 10% off' is not 35% off.
Stacked discounts multiply rather than add: 25% then 10% is 32.5% off, not 35%. Selling rather than shopping? Check what a discount does to your break-even point before running the sale.
Frequently asked questions
How do I calculate a discount?
Multiply the original price by the discount percentage to get the savings, then subtract: $120 at 25% off saves $30, for a final price of $90. Equivalent shortcut: multiply the price by (1 − discount), so $120 × 0.75.
How do stacked discounts work?
They multiply instead of adding. "25% off plus an extra 10% off" applies the 10% to the already-reduced price: $120 → $90 → $81, an effective 32.5% discount — not the 35% shoppers usually expect. Retailers rely on that gap.
How do I find what percent off a sale price is?
Divide the savings by the original price: (original − sale) ÷ original × 100. A $90 sale price on a $120 item is a 25% discount. The "What % off is it?" mode does this directly.
How much discount can my store afford to give?
It depends on your contribution margin — a store at a 40% margin loses money past 40% off before fixed costs. Model it before the sale with our break-even calculator: a 20% discount often requires selling 50–100% more units just to make the same profit.