Discount calculator

Multiply the price by the discount percentage divided by 100 to get the saving, then subtract it from the price. An $80 item at 25% off saves 80 × 0.25 = $20, so the sale price is $60. Equivalently, multiply the price by (1 − 0.25) = 0.75 to get the sale price in one step.

The second discount applies to the already reduced price, not the original, which is how "extra 10% off sale items" is normally meant. A 20% discount followed by 10% off is 100 × 0.8 × 0.9 = $72, a total of 28% off, not 30%. The "you save" line shows this combined percentage next to the amount saved.

After. Shops charge sales tax on the amount you actually pay, so the calculator applies the tax rate to the discounted price and adds it on. If your prices already include tax, as they do in most of Europe and in Korea, leave the tax rate at 0 and the final price equals the discounted price.

A 100% discount makes the item free: the final price is $0 and you save the full original price. The calculator does not accept discounts above 100% or below 0%, because those would produce a negative price or a markup rather than a discount, and it shows an error instead.

Not directly, since the discount fields only accept 0 to 100. For increases use the percentage calculator, which has an "A increased by B%" mode. You can, however, enter the increase as a tax rate here to see the price with a fixed percentage added on top of the discounted amount.