Discount Calculator

Enter the original price and the discount. If there is an extra “further X% off” offer, add it as a second discount.

Discounted price

For “an extra 10% off sale prices”.

Price after discount60.00
You save
20.00

Working

  1. 25% of 80.00 = 20.00
  2. 80.00 − 20.00 = 60.00

How discounts are calculated

saving = price × discount ÷ 100

sale price = price × (1 − discount ÷ 100)

25% off means you pay 75% of the price, so multiply by 0.75.

Worked example

80 with 25% off, then an extra 10% off

  1. 25% of 80 = 20, so the sale price is 60
  2. Extra 10% off 60 = 6, leaving 54
  3. Total saved: 26, which is 32.5% of 80

You pay 54. The combined discount is 32.5%, not 35%.

Stacked discounts do not add up

Each extra discount applies to the already-reduced price, so two discounts combine as 1 − (1 − d₁)(1 − d₂). “50% off plus an extra 50%” is 75% off, not free.

Shopping tips

  • Compare the final price, not the percentage — 30% off a higher list price can still cost more.
  • Check whether a discount applies before or after sales tax; it usually applies before.
  • For multi-buy offers such as “3 for 2”, the unit price calculator is a better comparison.