Discount Calculator
Enter the original price and the discount percentage to get the sale price and the amount you save. A second discount field lets you apply a coupon on top of the first reduction.
How to use it
Type the price before the sale and the percentage off. If a store offers a further coupon, enter it in the extra discount box. The result updates immediately.
How it is calculated
Final price = original x (1 - d1/100) x (1 - d2/100). Savings = original - final. The effective discount is savings / original x 100.
Two discounts do not add up. They multiply, because the second percentage applies to the already reduced price.
Examples
A jacket costs 120 and is 25 percent off: 120 x 0.75 = 90.00, so you save 30.00.
A 200 item with 20 percent off and a further 10 percent coupon: 200 x 0.8 x 0.9 = 144.00. You save 56.00, an effective 28 percent, not 30.
Good to know
Shops sometimes show a price as a percentage off and sometimes as a fixed amount. To compare offers fairly, convert both to the final price you pay. Also check whether a discount applies before or after tax and delivery, since that can change the real saving. This tool works on the price you type.
FAQ
Why is 20% plus 10% not 30% off?
The second discount applies to the reduced price, so the combined effect is 28 percent.
How do I find the original price from a sale price?
Divide the sale price by (1 - discount/100). For example 90 at 25 percent off came from 90 / 0.75 = 120.
Does the tool include sales tax?
No. Apply tax to the final price separately if your store adds it after the discount.
Can the discount be more than 100%?
No. A discount above 100 percent has no meaning, so the tool asks for a value from 0 to 100.