Discount Calculator
Find the sale price and how much you save. Stack several discounts to see the real total, or work backwards from a sale price to the original.
How stacked discounts work
When a store offers “25% off, then an extra 10% at checkout”, the second discount applies to the already-reduced price. On $80, 25% off leaves $60; 10% off that leaves $54. The total saving is $26, which is 32.5%, not the 35% you’d get by adding the percentages. The calculator shows the real total whenever you stack more than one discount.
The order doesn’t matter for percentage discounts, but it does when you mix in a fixed $ off coupon: $10 off then 20% off gives a lower price than 20% off then $10 off. Put them in the order the store applies them.
Sales tax is added to the discounted price, which is how US stores charge it for ordinary sales. Manufacturer coupons can be taxed on the pre-coupon price in some states.
Questions
How do I calculate a percentage discount?
Multiply the price by the percentage and subtract it. For 30% off $65: 65 × 0.30 = $19.50 saved, so the sale price is $45.50. A shortcut is to multiply by what’s left: 65 × 0.70 = $45.50.
Is 20% off plus 20% off the same as 40% off?
No. Two 20% discounts in a row take 36% off in total, because the second 20% is taken from a price that is already lower. You pay 0.8 × 0.8 = 64% of the original.
How do I find the original price from a sale price?
Divide the sale price by one minus the discount. If you paid $60 after 25% off, the original was 60 ÷ 0.75 = $80. Switch to “Find original price” above to do it automatically.
What percent off is a $15 discount on $60?
Divide the discount by the original price: 15 ÷ 60 = 25%. Enter the price, choose “$ off” for the discount and the calculator shows the percentage.