25% off 80
80 × 0.75 = 60, so you save 20.
Discount Calculator
Find the sale price and how much you save from a percentage discount, including stacked extra discounts.
Result
Enter your values and select Calculate to see the result.
Runs in your browser — nothing you enter is sent to a server.
How the Discount Calculator works
Enter the original price and the discount percentage. The calculator shows the sale price and how much you save. If a shop offers an extra discount on top (for example “an extra 10% off sale prices”), enter it as Extra discount — it is applied to the already reduced price, which is how stacked discounts work in practice.
Formula
sale = price × (1 − d ÷ 100)
Where:
- price
- The original price
- d
- The discount in percent
The saving is price − sale. With an extra discount, multiply by (1 − extra ÷ 100) again.
Examples
20% off, then an extra 10% off
100 × 0.8 × 0.9 = 72. The total discount is 28%, not 30%, because the second discount applies to the reduced price.
Frequently asked questions
Are two discounts the same as adding the percentages?
No. 20% off followed by 10% off is a 28% discount overall. Adding the percentages would overstate the saving.
Does the calculator include sales tax?
No. It works on whatever price you enter. To add tax to the sale price, use the Sales Tax Calculator.
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